{"id":425,"date":"2021-02-22T12:00:00","date_gmt":"2021-02-22T12:00:00","guid":{"rendered":"https:\/\/moneywithkatie.com\/tax-advantaged-retirement-investing-for-the-self-employed-sep-iras-and-solo-401ks\/"},"modified":"2026-03-19T17:42:02","modified_gmt":"2026-03-19T17:42:02","slug":"tax-advantaged-retirement-investing-for-the-self-employed-sep-iras-and-solo-401ks","status":"publish","type":"post","link":"https:\/\/moneywithkatie.com\/tax-advantaged-retirement-investing-for-the-self-employed-sep-iras-and-solo-401ks\/","title":{"rendered":"401(k)s for the Side Hustlers &amp; Self-Employed in 2026: How to Save Money on Your Taxes"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/moneywithkatie.com\/wp-content\/uploads\/2021\/02\/image-asset.webp\" alt=\"\" \/><\/p>\n<div class=\"sqs-html-content\" data-sqsp-text-block-content=\"\">\n<p><span style=\"font-weight: 400;\">Being self-employed has, candidly, been a meaningful goal of mine since about six months into working full-time.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">On<\/span><span style=\"font-weight: 400;\"> my ideal self-employed day, I rise at 7 a.m. (instead of my current 5:30 a.m. wake-up call) and pad around the kitchen in an impossibly chic matching silk pajama set. After an hour-long morning routine that consists of matcha lattes, transcendental meditation, and a leisurely stroll around the block, I finally sit down at my Pinterest desk to put in a few light hours of reading and writing before retiring to the den for my afternoon nap.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Of course, this fantasy produces a ridiculous amount of money, my hair is shinier, my teeth are whiter, and I am a happier, less stressed version of me.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For those of you who are self-employed, I\u2019m sure you\u2019re having a hard time reading through your twitching left eye and uncontrollable laughter. <\/span><span style=\"font-weight: 400;\">[<\/span><i><span style=\"font-weight: 400;\">Update from future, self-employed Katie: LOL.<\/span><\/i><span style=\"font-weight: 400;\">]<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Two obvious gripes are most common among the self-employed people I talk to: Healthcare and access to retirement accounts.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">While I don\u2019t have any answers for you on the healthcare front, I actually think the self-employed have a distinct <\/span><b>advantage<\/b><span style=\"font-weight: 400;\"> when it comes to tax-advantaged retirement investing.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">While the corporate robots (read: me) get hot and bothered about a dollar\u2011for\u2011dollar match and the ability to contribute up to $24,500 per year (2026) to our 401(k)s, self\u2011employed folks also have powerful ways to contribute to pre\u2011tax investment accounts.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Am I talking about the Roth IRA?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">No! Of course not. At $7,<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">00 per year, the Roth IRA is a great (post-tax) vehicle for both W-2 employees and the self-employed (you can open one in the straightforward way so long as you\u2019re under the income limit of $165,000 per year; if you\u2019re not, I\u2019ve got a frenzied guide to contributing to a backdoor Roth IRA<\/span><a href=\"https:\/\/www.moneywithkatie.com\/blog\/how-to-contribute-to-a-roth-ira-if-youre-over-the-income-limit\"> <span style=\"font-weight: 400;\">here<\/span><\/a><span style=\"font-weight: 400;\">).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Takeaways, upfront:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">I still think you should read the post because it gets into the <\/span><span style=\"font-weight: 400;\">granular tax details<\/span><span style=\"font-weight: 400;\">, but the main takeaway I had was this, <\/span><span style=\"font-weight: 400;\">all the standard \u201cnot financial advice\u201d disclaimers notwithstanding<\/span><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you\u2019re truly self-employed (no income from W-2 jobs or access to employer-sponsored plans), you could be better off with the <\/span><b>Solo 401(k)<\/b><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you\u2019re self-employed AND have a \u201cregular\u201d full-time job with a 401(k) (in other words, a side hustler), the <\/span><b>SEP IRA<\/b><span style=\"font-weight: 400;\"> might be an option for you to look into.<\/span><\/li>\n<\/ul>\n<h2 style=\"white-space: pre-wrap;\">Introducing: The SEP IRA and Solo 401(k)<\/h2>\n<p><span style=\"font-weight: 400;\">I honestly felt like the personal finance world had been holding out on me when I found out about these magnificent accounts. Let\u2019s focus on the SEP IRA first, because it\u2019s (generally) easier to set up.<\/span><\/p>\n<h3 style=\"white-space: pre-wrap;\"><strong>SEP IRAs<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">The maximum you can contribute to a SEP IRA is\u2014are you ready for this? I hope you\u2019re sitting down\u2014$7<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">,000 per year in 202<\/span><span style=\"font-weight: 400;\">6<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The catch is that, in order to contribute the full $7<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">,000, it must represent no more than (what works out to roughly) <\/span><span style=\"font-weight: 400;\">25<\/span><span style=\"font-weight: 400;\">% of your net self-employment income. In other words, in order to contribute the full $7<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">,000, you\u2019d have to make roughly $<\/span><span style=\"font-weight: 400;\">288<\/span><span style=\"font-weight: 400;\">,000 in net self-employment income.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">For example, if you <\/span><span style=\"font-weight: 400;\">net<\/span><span style=\"font-weight: 400;\"> $100,000 per year in 1099 income, the most you can contribute is around $2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">,000 (2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">%).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Still, this is a hell of a lot better than the $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 employee contribution limit <\/span><span style=\"font-weight: 400;\">in a typical employer-provided 401(k)<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Technically, a SEP IRA has an \u201cemployer-only contribution\u201d setup, but that\u2019s one of the perks of working for yourself. You are both the employer and the employee. You\u2019re contributing 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of your net 1099 income as the \u201cemployer\u201d to yourself as the \u201cemployee.\u201d Weird, right?<\/span><\/p>\n<p>The extra-dope thing about that $72,000 (if you\u2019re a high-roller earning $288,000 per year and eligible to contribute the full amount under IRS rules) is that it\u2019s generally tax-deductible, which means you won\u2019t pay taxes on it this year. With taxable income around $288,000, you\u2019d likely be in the 32% marginal federal tax bracket, which means a $72,000 contribution to a SEP IRA could generate approximately $23,040 in federal tax savings\u2014that is, $23,040 in taxes you may no longer owe this year, because you\u2019re reducing your current taxable income. and deferring taxation within your SEP IRA.<\/p>\n<p>Incre\u00edble<span style=\"font-weight: 400;\">! To really drive the point home, you could take that $<\/span><span style=\"font-weight: 400;\">23,040<\/span><span style=\"font-weight: 400;\"> you\u2019re saving and invest it in a taxable investing account to double your fun.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You\u2019ve got until the filing deadline to make your contributions, which means (in a normal year) you\u2019ll be contributing from April 15 to April 15 (i.e., tax season to tax season).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This means, if you\u2019re reading this in March of 2026 and you haven\u2019t filed your taxes yet, you can open a SEP IRA, make contributions, and deduct it before you file to save yourself some tax dollars for the 2025 #TaxSzn.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">One weird tax caveat that I don\u2019t all-the-way-understand, but mostly get it (sue me!)<\/span><span style=\"font-weight: 400;\">: Technically<\/span><span style=\"font-weight: 400;\">, it\u2019s not <\/span><b>quite<\/b><span style=\"font-weight: 400;\"> as baller as it sounds, because you\u2019ve got to pay your self-employment taxes on your net income (profits \u2013 expenses) before you can calculate your 25% contribution. That is: It\u2019s not 25% of your gross self-employment income (the money on those #checks), but closer to 20% of your net income less half your self-employment taxes. <\/span><i><span style=\"font-weight: 400;\">plays tiny violin and begrudgingly hands back some of my Stripe funds from spreadsheet sales<\/span><\/i><\/p>\n<p><span style=\"font-weight: 400;\">What if you\u2019re a big side hustler and you\u2019ve got a 401(k) through your employer and a side business?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">First of all, I\u2019d love for you to flip your hair as I congratulate you on being the Ultimate Millennial Hustle Culture Workhorse! We love to see it. From one <\/span><span style=\"font-weight: 400;\">ambition trauma goblin<\/span><span style=\"font-weight: 400;\"> to another, I salute you (lots of weird military references in this post; I\u2019m sorry).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">And beyond all the hair-flipping, you\u2019re in luck!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You can still open and contribute to a SEP IRA even if you\u2019ve already got an employer-sponsored 401(k) through traditional, full-time work.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The same rules more or less apply; you\u2019re the employer in the SEP IRA situation, so you\u2019re making employer contributions to yourself as the employee.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">You could theoretically max out your 401(k) with your regular salary at $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 per year, then turn to your SEP IRA and contribute 20% of your net self-employment income and defer that as well (defer = make it tax-deductible and reduce your taxable income).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">But don\u2019t take it from me\u2014straight from the IRS in this <\/span><a href=\"https:\/\/www.irs.gov\/retirement-plans\/retirement-plans-faqs-regarding-seps-establish-a-sep\"><span style=\"font-weight: 400;\">screenshot<\/span><\/a><span style=\"font-weight: 400;\">:<\/span><\/p>\n<\/div>\n<p><img decoding=\"async\" src=\"https:\/\/moneywithkatie.com\/wp-content\/uploads\/2021\/02\/ScreenShot2021-01-16at104640AM.webp\" alt=\"  Straight from the federal horse\u2019s mouth!  \" \/><\/p>\n<div class=\"sqs-html-content\" data-sqsp-text-block-content=\"\">\n<h2 class=\"sqsrte-large\" style=\"white-space: pre-wrap;\">How to open your SEP IRA<\/h2>\n<p><span style=\"font-weight: 400;\">Well, you know what I\u2019m going to say:<\/span><a href=\"https:\/\/www.betterment.com\/solo-401k?utm_campaign=2026-solo-401k&amp;utm_medium=influencer&amp;utm_source=mwk&amp;utm_content=blog\"> <span style=\"font-weight: 400;\">Betterment offers one<\/span><\/a><span style=\"font-weight: 400;\">. They\u2019ll walk you through the process, including providing the IRS form you need to fill out and keep for your records in order to be in the clear.<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">Paid client. Views may not be representative. See <\/span><a href=\"https:\/\/apps.apple.com\/us\/app\/betterment-invest-save-money\/id393156562\"><span style=\"font-weight: 400;\">App Store<\/span><\/a><span style=\"font-weight: 400;\"> &amp; <\/span><a href=\"https:\/\/play.google.com\/store\/apps\/details?id=com.betterment&amp;hl=en_US&amp;gl=US\"><span style=\"font-weight: 400;\">Google Play<\/span><\/a><span style=\"font-weight: 400;\"> reviews. Investing involves risk. Performance not guaranteed. <\/span><a href=\"http:\/\/betterment.com\/moneywithkatie\"><span style=\"font-weight: 400;\">Learn more<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/em><\/p>\n<p><span style=\"font-weight: 400;\">A little fuzzy on how much, exactly, you can contribute? The IRS provides this \u201c<\/span><a href=\"https:\/\/www.irs.gov\/retirement-plans\/self-employed-individuals-calculating-your-own-retirement-plan-contribution-and-deduction\"><span style=\"font-weight: 400;\">calculator<\/span><\/a><span style=\"font-weight: 400;\">\u201d (you can probably guess why I\u2019m using quotation marks if you\u2019ve ever done your taxes before) that\u2019ll help you figure it out down to the penny.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">I\u2019ll be honest: I tried to follow their instructions, and I found it pretty confusing. I\u2019m a big fan of the 80\/20 rule; that is, 20% of your effort drives 80% of the results. Put another way: Get the most juice for the least squeeze.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Rather than trying to figure out the exact amount I could contribute, I\u2019d probably play it safe and contribute around 20% of my net pay and call it a day. (If you aren\u2019t as comfortable with estimates like I am, please, for the love of God, hire an accountant<\/span><span style=\"font-weight: 400;\">\u2014something I finally did in 2026 after, you guessed it, becoming self-employed<\/span><span style=\"font-weight: 400;\">.)<\/span><\/p>\n<p class=\"\" style=\"white-space: pre-wrap;\"><span style=\"font-weight: 400;\">Legally, you don\u2019t need an EIN to open a SEP IRA, but I\u2019ve read that most brokerage firms require it (more on EINs below, because they <\/span><i><span style=\"font-weight: 400;\">are<\/span><\/i><span style=\"font-weight: 400;\"> required for Solo 401(k)s<\/span><span style=\"font-weight: 400;\">)<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h3><b>An important note on SEP IRAs and Backdoor Roth IRAs<\/b><\/h3>\n<p>If you currently perform a Backdoor Roth IRA (if you don\u2019t know what this is, don\u2019t worry; that means this watch-out probably doesn\u2019t apply to you), you\u2019ll want to think carefully about opening and funding a SEP IRA. A SEP IRA is, in the eyes of the IRS, a Traditional IRA\u2014which means pre-tax funds sitting inside your SEP IRA may result in part of your Roth conversion being taxable (the \u201cpro rata\u201d rule).<\/p>\n<p><span style=\"font-weight: 400;\">For that reason, if you\u2019re committed to the Backdoor Roth IRA, it could be safer to go with the Solo 401(k).\u00a0<\/span><\/p>\n<h2 style=\"white-space: pre-wrap;\">So where does the Solo 401(k) come in?<\/h2>\n<p><span style=\"font-weight: 400;\">Solo 401(k)s work a little bit differently, and are definitely better for truly self-employed people than \u201ctraditionally\u201d employed people with side hustles.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">With a Solo 401(k), you make contributions as an employee and an employer (vs. just as the employer, as in the SEP IRA) for a total contribution of $7<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">,000 (just like the SEP IRA) for 202<\/span><span style=\"font-weight: 400;\">6<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p class=\"\" style=\"white-space: pre-wrap;\"><span style=\"font-weight: 400;\">You can contribute (<\/span><i><span style=\"font-weight: 400;\">please read this in a robot voice)<\/span><\/i><span style=\"font-weight: 400;\"> up to $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 as the employee, and then an <\/span><i><span style=\"font-weight: 400;\">additional<\/span><\/i><span style=\"font-weight: 400;\"> employer contribution of up to 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of your net income, less half the self-employment taxes and your $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 contribution (that\u2019s right\u2014you have to subtract the $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 from your net income in addition to the taxes; they really get you both ways). <\/span><\/p>\n<h3 style=\"white-space: pre-wrap;\"><strong>Careful if you\u2019re already contributing the maximum to your 401(k) plan at work<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">The hairy thing for side hustlers with the Solo 401(k) is that 401(k) contribution limits are determined per <\/span><i><span style=\"font-weight: 400;\">person<\/span><\/i><span style=\"font-weight: 400;\">, not per plan\u2014which means if you\u2019re already contributing $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 to your employer 401(k), you can\u2019t also contribute $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 to your Solo 401(k) as an employee (this is known as the \u201celective deferral\u201d).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">They make <\/span><i><span style=\"font-weight: 400;\">more <\/span><\/i><span style=\"font-weight: 400;\">sense for self-employed with only self-employment income, since your $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 contribution is irrespective of your total net income less all the tax mumbo jumbo (in other words, it doesn\u2019t matter how much you make; as long as you make more than $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500, you can contribute $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500). Compare that to the SEP IRA, where in order to contribute $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500, you\u2019d have to make more than <\/span><span style=\"font-weight: 400;\">around $98,000<\/span><span style=\"font-weight: 400;\"> in net business income.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">So your employee contributions can go up to $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500, but your \u201c<\/span><i><span style=\"font-weight: 400;\">employer<\/span><\/i><span style=\"font-weight: 400;\">\u201d contributions can still equal that 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% chunk of what\u2019s left\u2014which means if you can manage to contribute more than $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 of your income, you can (and should) up to 20% of the \u201cnet income minus half self-employment taxes minus $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 contribution.\u201d<\/span><\/p>\n<h3><b>Let\u2019s do an example, because I can feel your eyes rolling into the back of your head<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">The Solo 401(k) can make more sense for the truly self-employed unless said person earns <\/span><b>more than around<\/b><b> $288,000 in net<\/b><b> self-employment income per year<\/b><span style=\"font-weight: 400;\">. Here\u2019s why:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Because the <\/span><b>SEP IRA<\/b><span style=\"font-weight: 400;\"> is structured to only allow \u201cemployer\u201d (read: you) contributions of up to 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of your net income, in order to contribute the maximum allowable ($7<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">,000 per year), you\u2019d need to <\/span><span style=\"font-weight: 400;\">net<\/span> <span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">x that (roughly, in order for 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of your net business income to equal $7<\/span><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">,000), remember? That\u2019s $<\/span><span style=\"font-weight: 400;\">288<\/span><span style=\"font-weight: 400;\">,000.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Since the <\/span><b>Solo 401(k)<\/b><span style=\"font-weight: 400;\"> allows you to contribute $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 as the \u201cemployee\u201d and 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of whatever\u2019s left as the <\/span><i><span style=\"font-weight: 400;\">employer<\/span><\/i><span style=\"font-weight: 400;\"> (also you!), you have the opportunity to double-dip.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Consider an example of someone who makes $150,000 in net business income. <\/span><span style=\"font-weight: 400;\">(All numbers here are approximate for the sake of an example; again, please go inquire with your CPA for the correct totals!)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of $150,000 is $<\/span><span style=\"font-weight: 400;\">37,500<\/span><span style=\"font-weight: 400;\">. That\u2019s pretty good, right? That\u2019d be roughly their allowable contribution in a SEP IRA.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">But what if they chose a Solo 401(k)? Then, they can contribute their initial employee contribution of $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500, and then 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of whatever\u2019s left.<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">$150,000 \u2013 $2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 = $12<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">,500, and 2<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">% of $12<\/span><span style=\"font-weight: 400;\">5<\/span><span style=\"font-weight: 400;\">,500 (or their allowed \u201cemployer match\u201d as their own employer) is <\/span><span style=\"font-weight: 400;\">$31,375<\/span><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"3\"><span style=\"font-weight: 400;\">$2<\/span><span style=\"font-weight: 400;\">4<\/span><span style=\"font-weight: 400;\">,500 (their \u201cemployee\u201d contribution) + <\/span><span style=\"font-weight: 400;\">$31,375<\/span><span style=\"font-weight: 400;\"> (their \u201cemployer\u201d contribution) = <\/span><span style=\"font-weight: 400;\">$55,875<\/span><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><i><span style=\"font-weight: 400;\">The SEP IRA would only allow them to contribute <\/span><\/i><b>$37,500<\/b><i><span style=\"font-weight: 400;\">, whereas the Solo 401(k) allowed <\/span><\/i><b>$55,875<\/b><i><span style=\"font-weight: 400;\">, simply because of the way the account contributions are structured.<\/span><\/i><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>The only reason the SEP IRA might make more sense at a net business income of $288,000 or above is because 25% of that net income is $72,000 maximum. In pretty much every other case, the Solo 401(k) will allow for more money to be contributed.<\/p>\n<h3><b>Now, that being said, the Solo 401(k)s:<\/b><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Do have higher administrative burdens from a paperwork standpoint<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Are really only tenable for people who are fully self-employed, as your employer 401(k) will make it function just like a SEP IRA<\/span><\/li>\n<\/ol>\n<p><b>Other fun tax good-to-knows:<\/b><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\">You need an EIN to open a Solo 401(k), which is the number you get when you start a business and register it legally.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">While your SEP IRA contributions run April to April, Solo 401(k) employee contributions have to be made by December 31 (in other words, they run on a calendar-year basis), but <\/span><i><span style=\"font-weight: 400;\">employer<\/span><\/i><span style=\"font-weight: 400;\"> contributions can be made up until the tax filing deadline of April 15.\u00a0<\/span><\/li>\n<\/ul>\n<p><b>Here\u2019s the good news:<\/b><span style=\"font-weight: 400;\"> As of 2025, Betterment began offering a Solo 401(k). This is a huge development. I finally decided it was time to make the switch and opened my Betterment Solo 401(k) last month.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The process was pretty easy. I originally had to schedule a call to walk through it with a Betterment representative, but because they were able to confirm all my business details after I scheduled my onboarding, I was able to verify all the details over email if that was my preference (you can also keep the call if that makes you more comfortable). Betterment handles the paperwork.\u00a0<\/span><\/p>\n<h2><b>Let\u2019s return to our order of operations<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">You may be wondering now how to incorporate this new blitzkrieg of information into everything you already know. Let\u2019s create a funnel, shall we? This is an order<\/span><span style=\"font-weight: 400;\"> you could consider depending<\/span><span style=\"font-weight: 400;\"> on which investment accounts you have access to and your income. If I list anything that you don\u2019t have (read: can\u2019t have), <\/span><i><span style=\"font-weight: 400;\">just skip to the next thing<\/span><\/i><span style=\"font-weight: 400;\">.\u00a0<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Employer-sponsored 401(k)<\/b><span style=\"font-weight: 400;\"> [full-time corporate employee with a side hustle] <\/span><span style=\"font-weight: 400;\">or<\/span> <b>Solo 401(k)<\/b><span style=\"font-weight: 400;\"> [full-time self-employed] up to <\/span><b>$2<\/b><b>4<\/b><b>,500<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Roth IRA <\/b><span style=\"font-weight: 400;\">[everyone!] up to <\/span><b>$7,<\/b><b>5<\/b><b>00<\/b><span style=\"font-weight: 400;\"> per year<\/span><span style=\"font-weight: 400;\"> [can do Backdoor if you need to, but remember that Backdoor Roth IRA folks will want to use a Solo 401(k) rather than a SEP IRA to avoid the pro rata rule]<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>SEP IRA<\/b><span style=\"font-weight: 400;\"> [full-time corporate employee with a side hustle] up to ~20% of your net side hustle income, less half self-employment taxes up to <\/span><b>$7<\/b><b>2<\/b><b>,000<\/b><span style=\"font-weight: 400;\"> per year, <\/span><span style=\"font-weight: 400;\">or <\/span><b>Solo 401(k)<\/b><span style=\"font-weight: 400;\">\u2019s \u201cemployer match\u201d feature [if you\u2019re self-employed and knocked out the \u201cemployee\u201d contribution in step 1]<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Taxable investing account <\/b><span style=\"font-weight: 400;\">[regular ole\u2019 investing with no fancy stipulations or limits, but the highest tax burdens, called \u201cGeneral Investing\u201d in Betterment]<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Easy, right? Just go out and earn hundreds of thousands of dollars and master tax law, and you\u2019re good!<\/span><\/p>\n<p><span style=\"font-weight: 400;\">(Just kidding, but we <\/span><i><span style=\"font-weight: 400;\">are <\/span><\/i><span style=\"font-weight: 400;\">all in this together, figuring it out one step at a time.)<\/span><\/p>\n<p><em><span style=\"font-weight: 400;\">Betterment does not provide tax advice.<\/span><\/em><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Being self-employed has, candidly, been a meaningful goal of mine since about six months into working full-time. On my ideal self-employed day, I rise at 7 a.m. (instead of my current 5:30 a.m. wake-up call) and pad around the kitchen in an impossibly chic matching silk pajama set. After an hour-long morning routine that consists [&hellip;]<\/p>\n","protected":false},"author":178814,"featured_media":2414,"comment_status":"closed","ping_status":"open","sticky":false,"template":"si-template-single-post-self-employed-investing.php","format":"standard","meta":{"footnotes":""},"categories":[37,35],"tags":[42,63],"class_list":["post-425","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-financial-independence","category-investing-and-taxes","tag-self-employed-investing","tag-popular-self-employed-investing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>401(k)s for the Side Hustlers &amp; Self-Employed in 2026: How to Save Money on Your Taxes - Money with Katie<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/moneywithkatie.com\/tax-advantaged-retirement-investing-for-the-self-employed-sep-iras-and-solo-401ks\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"401(k)s for the Side Hustlers &amp; Self-Employed in 2026: How to Save Money on Your Taxes - Money with Katie\" \/>\n<meta property=\"og:description\" content=\"Being self-employed has, candidly, been a meaningful goal of mine since about six months into working full-time. 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