Most self-employed Vietnamese Americans pay tax on nearly every dollar their business earns. A SEP-IRA changes that. It lets a salon owner or restaurant operator shelter a large share of profit for retirement while cutting this year’s tax bill. Few self-employed owners use one. Fewer still know the deadline to fund it stretches all the way to the extended filing date.
This guide walks through how a SEP-IRA works, what it can save, and how to set one up before the tax deadline.
What a SEP-IRA Actually Does
A SEP-IRA, or Simplified Employee Pension, is a retirement account built for self-employed people and small business owners. You contribute pre-tax dollars from business profit. That money grows tax-deferred until retirement withdrawals.

The deduction is the real draw. Every dollar you contribute reduces your taxable self-employment income for the year. A salon owner in a combined 30% tax bracket who contributes $15,000 saves roughly $4,500 in taxes immediately. The money is not gone. It sits in an investment account working for your future.
Unlike a pension from an employer, you control a SEP-IRA entirely. You choose the brokerage, the investments, and how much to contribute each year. Nothing locks you into a fixed contribution schedule.
How Much You Can Contribute
Self-employed owners can generally contribute up to 25% of net self-employment income to a SEP-IRA, after adjusting for self-employment tax and the contribution itself. The IRS also caps the dollar amount each year, adjusted for inflation. That cap has recently run around $69,000, but it changes annually, so check the IRS SEP-IRA page for the current year’s figure before you contribute.
Here is a worked example. A nail salon owner nets $80,000 in self-employment income after business expenses. After the standard adjustments, her SEP-IRA contribution limit lands close to $14,900. She contributes that full amount. Her taxable income for the year drops by nearly $15,000, and her tax bill falls by several thousand dollars depending on her bracket.
That is money most owners simply leave on the table every single year. A CPA can run the exact calculation for your specific net profit, since the adjustment formula is not a flat 25%.
Why Vietnamese Small Business Owners Skip This Deduction
Many self-employed Vietnamese Americans reinvest every spare dollar back into the shop. Booth rent, staff wages, equipment, and inventory all compete for cash. Retirement savings feels like a luxury for later.
That mindset misses something important. A SEP-IRA is not a luxury. It is a legal deduction that lowers your tax bill whether or not you feel ready to save for retirement. Combined with the write-offs covered in our nail salon deductions guide, it is one of the few ways to cut taxable income without cutting the business itself.
Some owners also assume retirement accounts require a financial advisor, a complicated application, or ongoing fees they cannot spare. That assumption is outdated. Most major brokerages now open a SEP-IRA account in a single sitting, often the same day.
Setting Up a SEP-IRA With Minimal Paperwork
Opening a SEP-IRA is simpler than most owners expect. Any major brokerage, from Fidelity to Schwab to Vanguard, offers one with a short application and no cost to open.
You sign a basic adoption agreement, usually IRS Form 5305-SEP or the brokerage’s equivalent. There is no annual filing requirement with the IRS for a SEP-IRA, unlike some other retirement plans. Ongoing administration is minimal compared to a traditional pension or a more complex retirement structure.
The account must be established and funded by your tax filing deadline, including any extensions you file. That flexibility is a major advantage. You can wait until you know your exact net profit for the year, then decide how much to contribute before you file.
SEP-IRA vs. Solo 401(k): A Quick Comparison
A Solo 401(k) is worth knowing about too, since it changes the math for some owners. It has a separate “employee deferral” component on top of the employer contribution, which can allow higher total contributions at lower income levels than a SEP-IRA offers.
The tradeoff is timing. The employee deferral piece of a Solo 401(k) generally must be elected by December 31, not the extended filing deadline. That means less flexibility if you are not sure how much you can afford until later.
For most self-employed Vietnamese American owners, the SEP-IRA’s simplicity and generous deadline make it the easier starting point. Still, if your net profit sits in a lower range, a Solo 401(k) may let you contribute more. Compare both options with a CPA before deciding, since the right answer depends on your specific numbers.
Common Mistakes That Cost Owners Money
The single biggest mistake is doing nothing. Owners who never open a SEP-IRA leave a legal deduction unused every year, with no benefit to show for it.
The second mistake is waiting too long to calculate the contribution. Your SEP-IRA limit depends on your exact net self-employment income, so you need that number finalized before funding the account. Filing an extension buys you time to get this right instead of rushing before the original deadline.
The third mistake is contributing without professional guidance. That 25%-of-income figure is a simplification. Real formulas adjust for self-employment tax and the contribution itself, so the actual limit is somewhat lower than a quick mental calculation suggests.
FAQ
What is a SEP-IRA in simple terms?
A SEP-IRA is a retirement account for self-employed people that lets you deduct contributions from business profit. It reduces your taxable income while building retirement savings.
How much can I contribute to a SEP-IRA?
Generally up to 25% of net self-employment income after certain adjustments, capped at a dollar limit the IRS sets each year. Confirm the current year’s cap before contributing, since it changes annually.
When is the deadline to open and fund a SEP-IRA?
You can open and fund a SEP-IRA up until your tax filing deadline, including extensions. That gives you far more time than most retirement accounts allow.
Is a SEP-IRA hard to set up?
No. Most major brokerages let you open one online with minimal paperwork, often the same day. There is no annual IRS filing requirement for the account itself.
Should I choose a SEP-IRA or a Solo 401(k)?
It depends on your income level. A Solo 401(k) can allow higher contributions at lower income through its employee deferral piece, but that piece has a stricter year-end deadline. Discuss both with a CPA.
Does contributing to a SEP-IRA lower my self-employment tax?
No. It reduces your income tax by lowering taxable income, but self-employment tax is calculated on net earnings before the SEP-IRA deduction applies.
Quick Summary
- A SEP-IRA lets self-employed Vietnamese Americans deduct up to 25% of net self-employment income, subject to an annual IRS dollar cap that changes yearly.
- You can open and fund a SEP-IRA at any major brokerage right up until your tax filing deadline, including extensions.
- A Solo 401(k) sometimes allows higher contributions at lower income levels, so compare both options with a CPA before choosing.
This post is for informational purposes only and does not constitute financial, tax, or legal advice. Laws and regulations change frequently. Please consult a qualified professional for your specific situation.