Do You Pay Estimated Taxes in Your First Year of Business? (w/Examples) + FAQs

This article reflects federal rules and general state guidance as of June 2026 and covers tax years 2025 and 2026. Tax law changes — confirm current figures with the IRS or a licensed professional before you file.

Quick Answer

Maybe. For tax year 2026, you must pay federal estimated taxes in your first year of business if you expect to owe $1,000 or more when you file. But if you had no tax liability last year and were a U.S. citizen for the full 12 months, you usually owe no underpayment penalty even if you skip estimates this year.

That single fact catches most new business owners off guard. You start earning self-employment income, no employer withholds tax for you, and the IRS pay-as-you-go rule quietly expects you to send money four times a year — or face a penalty that, for the quarter beginning April 1, 2026, runs at a 6% annual rate compounded daily.

The stakes are real and the clock is already running. The IRS reports that the underpayment interest rate sat at 7% through the first quarter of 2026, and millions of self-employed filers get hit with the penalty each year simply because no one told them the deadlines. Whether you pay, how much, and when depends on your income, your prior year, and your business structure — and this guide walks through each path.

💰 How to tell in five minutes whether you actually owe estimated taxes in year one.
🛡️ The prior-year safe harbor that can legally let a brand-new business pay nothing all year.
🧮 Fully worked dollar examples for a freelancer, an LLC owner, and an S-corp shareholder.
📅 The exact 2026 quarterly due dates and what the penalty costs if you blow them.
🚫 The seven first-year mistakes that turn a small tax bill into a painful one.

What “Estimated Taxes” Really Means

Estimated tax is how you pay income tax — and, for most business owners, self-employment tax — on money that has no withholding. When you work a regular job, your employer pulls tax from each paycheck. When you run a business, no one does that for you, so the law makes you the one who sends tax to the government during the year.

The U.S. income tax system runs on a “pay-as-you-go” basis. That means the government wants its share as you earn, not in one lump sum next April. The rule lives in Internal Revenue Code §6654 for individuals, which is the path nearly every first-year sole proprietor, freelancer, and single-member LLC owner travels.

The consequence of ignoring this is an underpayment penalty, which is really interest charged on the tax you should have paid earlier. It is not a flat fine — it builds quarter by quarter on the unpaid amount, so a small slip early in the year grows by the time you file.

Here is the part that surprises new owners: there are really two taxes hiding inside one payment. The first is regular income tax on your profit. The second is self-employment tax of 15.3% — 12.4% for Social Security and 2.9% for Medicare — which covers the payroll taxes an employer would normally split with you. A reader who plans only for income tax is the reader who comes up short in April.

What you should do about it: estimate both taxes together, set aside a percentage of every payment you receive, and read the next section to see whether you must actually send quarterly checks at all.

The First-Year Trap: Why New Owners Get Caught

The first-year trap is simple. You had a W-2 job, taxes came out automatically, and you never thought about quarterly deadlines. Then you go out on your own, the money starts coming in, and nothing is withheld. By the time you file your first business return, you may owe thousands at once — plus a penalty for not paying along the way.

The trap is worse because the self-employment tax stacks on top of income tax. A freelancer who clears $50,000 in profit owes roughly $7,065 in self-employment tax before a dollar of income tax. New owners who budget only for income tax routinely under-save by thousands.

The good news, and the reason this article exists, is that the law gives first-year businesses an unusual break called the prior-year safe harbor. Because many new owners had little or no tax liability the year before, they often qualify to pay nothing in estimates without any penalty. The trap and the escape hatch sit side by side — you just have to know which one applies to you.

The $1,000 Threshold and the Safe Harbors

For tax year 2026, the rule for individuals (which covers sole proprietors, freelancers, single-member LLCs, partners, and S-corp shareholders) is laid out by the IRS estimated tax guidance: you generally must pay estimated tax if you expect to owe $1,000 or more for the year after subtracting withholding and refundable credits.

But owing $1,000 does not automatically mean a penalty. You avoid the penalty if your payments during the year meet one of two “safe harbors.” Meeting either one protects you completely, even if you end up owing a big balance at filing.

Safe Harbor 1: Pay 90% of This Year’s Tax

The first safe harbor says you are protected if you pay at least 90% of the tax you owe for the current year through withholding and estimates. This is the path for a business that is genuinely profitable in year one and expects a real tax bill.

The catch is that it requires you to predict the current year accurately, which is hard for a new business with unpredictable income. Guess too low and you fall short of 90%, and the penalty applies to the gap. The next step for most new owners is to lean on the second, safer harbor instead.

Safe Harbor 2: Pay 100% of Last Year’s Tax

The second safe harbor says you are protected if you pay at least 100% of the tax shown on your prior-year return (110% if your prior-year adjusted gross income was over $150,000). This is the harbor that rescues most first-year businesses, because it is based on a year you already know.

Here is why it matters so much in year one. If last year you were a student, unemployed, or had a modest W-2 with all tax withheld, your “100% of last year” target may be small — or even zero. The consequence is powerful: a new business with a zero or tiny prior-year tax can owe a large balance in year one and still face no penalty, as long as the prior year met the conditions below.

The Zero-Liability Escape Hatch

The strongest first-year protection comes from a special rule. If you had no tax liability for the full prior year, you were a U.S. citizen or resident the whole year, and that prior year covered all 12 months, the underpayment penalty does not apply at all — no matter how much you owe in year one.

“No tax liability” means your total tax for the prior year was zero, often because you had little income or your withholding and credits wiped out the bill. The misconception here is that a low refund counts; what matters is your total tax, line by line, not whether you got money back.

What you should do about it: pull last year’s Form 1040 and look at your total tax line. If it is zero and you were a citizen all year, you can legally skip estimates in year one — but you must still save for the actual bill due at filing. The escape hatch waives the penalty, not the tax.

Which Situation Applies to You?

Estimated tax is never one-size-fits-all. Use this branch to find the path that fits your first year, then read the matching section above.

You had zero total tax last year and were a citizen all 12 months: the zero-liability escape hatch applies — no penalty even if you owe a lot this year.
You had a small tax bill last year (old W-2 job, modest income): aim for Safe Harbor 2 by paying 100% of that small number in even installments.
You expect a big, profitable first year and no helpful prior year: target Safe Harbor 1 (90% of this year) with quarterly payments.
You also have a W-2 job alongside the business: raise your job’s withholding on Form W-4 instead of mailing checks — withholding counts as paid evenly all year.
You formed a C corporation: different rules and a different form apply; see the corporation section below.

How Business Structure Changes the Answer

Your entity type decides which rules and forms you use. Most first-year owners are taxed as individuals, but the path differs in important ways. The table below separates the common structures.

Business Structure	How First-Year Estimated Tax Works
Sole proprietor / 1099 freelancer	Files Schedule C with the personal return; pays income tax plus 15.3% self-employment tax through Form 1040-ES; $1,000 threshold applies.
Single-member LLC	Treated the same as a sole proprietor by default; the LLC is “disregarded,” so the owner pays through Form 1040-ES on personal estimates.
Multi-member LLC / partnership	The business files an information return, but partners pay tax on their share personally through Form 1040-ES, including self-employment tax.
S corporation shareholder	Pays themselves a “reasonable” W-2 salary with withholding; remaining profit passes through and may still require personal estimates on Form 1040-ES.
C corporation	A separate taxpayer; pays its own estimated tax on Form 1120-W if it expects to owe $500 or more, at the flat 21% rate.

Sole Proprietors, Freelancers, and Single-Member LLCs

This is the largest group of first-year filers and the simplest case. The IRS treats you and your business as one taxpayer, so you report profit on Schedule C and pay through personal estimates on Form 1040-ES. Both income tax and the 15.3% self-employment tax run through this single channel.

The consequence of forgetting the self-employment piece is the classic first-year shock — a far bigger bill than expected. Your next step is to set aside roughly 25%–30% of net profit as you earn, then test it against the safe harbors before each quarterly deadline.

Partnerships and Multi-Member LLCs

A partnership itself does not pay income tax. Instead it passes profit to the partners on a Schedule K-1, and each partner pays personally — including self-employment tax on most active partners’ shares. So the first-year estimated tax obligation lands on you, not the business.

The common misconception is that “the partnership handles taxes.” It files paperwork, but the money comes from the partners. Your next step is to estimate your share of profit and pay your own Form 1040-ES installments, because no one else will.

S Corporation Shareholders

An S corporation must pay an owner who works in the business a reasonable salary as W-2 wages, with normal withholding. That withholding can cover much of your tax. But profit beyond your salary passes through to your personal return and may still push you over the $1,000 line, requiring personal estimates.

The consequence of setting your salary too low is an IRS challenge and back payroll taxes. Your next step is to set a defensible salary, let withholding do the heavy lifting, and top up with Form 1040-ES only if pass-through profit creates a gap.

C Corporations: A Different Rulebook

A C corporation is its own taxpayer and follows Form 1120-W rules. It must make estimated payments if it expects to owe $500 or more in tax for the year, at the flat 21% corporate rate, in four installments.

For a new corporation, both safe harbors are 100%. A “large corporation” — one with $1 million or more in taxable income in any of the three prior years — loses the prior-year safe harbor and must pay 100% of the current year’s tax. A first-year corporation rarely qualifies as “large,” so this mostly affects later years, but it is worth knowing the cliff exists.

2026 Quarterly Due Dates

Federal estimated taxes are due four times a year, and the periods are uneven, which trips up new owners. For income earned in tax year 2026, the IRS deadlines are below. If a date lands on a weekend or holiday, it moves to the next business day.

2026 Income Period	Payment Due Date
January 1 – March 31, 2026	April 15, 2026
April 1 – May 31, 2026	June 15, 2026
June 1 – August 31, 2026	September 15, 2026
September 1 – December 31, 2026	January 15, 2027

The consequence of missing a deadline is that the penalty starts running on that quarter’s shortfall from the due date forward, even if you catch up later. If you started your business mid-year, you only owe estimates for the quarters after you began earning — a August start means your first payment is the September 15 installment, not a back payment for spring.

The easiest fix for a missed quarter is to pay as soon as you can; a late payment still stops the interest from growing further. The fastest way to pay is online through IRS Direct Pay or the Electronic Federal Tax Payment System, both free.

Worked Example 1: Maria the Freelance Designer

Maria quit her W-2 job in January 2026 to freelance full time. She expects $60,000 in net profit for 2026. In 2025 she worked all year as an employee and her total tax was $4,800, fully withheld.

First, her self-employment tax. She multiplies $60,000 by 92.35% to get $55,410, then by 15.3%, which equals $8,478. She can deduct half of that, $4,239, before figuring income tax.

Her income tax: taxable income of about $60,000 − $4,239 (half SE tax) − $15,000 (2025 standard deduction figure used as a planning estimate; confirm the 2026 amount) leaves roughly $40,761, producing income tax of about $4,640 as a single filer. Her total 2026 tax is about $13,118.

Now the safe harbor. Because her 2025 tax was $4,800 and her prior-year AGI was under $150,000, Safe Harbor 2 lets her pay just $4,800 across four quarters — $1,200 each on April 15, June 15, September 15, and January 15 — to avoid any penalty. She will still owe the rest (about $8,318) at filing, but penalty-free. Maria’s smart move is to also set aside the extra so April 2027 is not a shock.

Worked Example 2: David the New LLC Owner

David opened a single-member LLC consulting practice in August 2026. He had no income and zero total tax in 2025 because he was in graduate school the whole year and was a U.S. citizen for all 12 months. He expects $25,000 of profit from August through December.

David’s self-employment tax is $25,000 × 92.35% × 15.3% = about $3,533, and his income tax is small after the standard deduction. His total 2026 tax might be roughly $3,900.

Here is the escape hatch in action. Because David had zero total tax for the full prior year and was a citizen all year, the underpayment penalty does not apply to him in 2026 — no matter what he owes. He can legally skip every quarterly payment. His only real task is to save about $3,900 so he can pay the full bill by April 15, 2027 without borrowing.

Worked Example 3: Priya the S-Corp Shareholder

Priya’s first-year business elected S-corp treatment in 2026. She pays herself a $50,000 reasonable salary with normal withholding and expects an additional $40,000 of pass-through profit.

Her salary withholding covers the tax on her wages. But the $40,000 of pass-through profit is taxed on her personal return with no withholding behind it. At roughly a 22% marginal rate plus state, that profit could add about $8,800 in federal income tax (S-corp profit is not subject to self-employment tax, a key S-corp benefit).

Because her 2025 prior-year tax was $6,000 (an old job), Safe Harbor 2 lets her cover the gap by paying $6,000 minus her 2026 withholding through estimates, or by simply increasing her own W-2 withholding so it counts as paid evenly all year. Priya’s next step is to raise withholding on a fresh Form W-4, the cleanest way for an S-corp owner to stay penalty-free.

How to Calculate and Pay (Step by Step)

Use Form 1040-ES and its worksheet to figure your number. The form bundles the worksheet, the four payment vouchers, and the year’s due dates in one PDF. Work through these steps before the first deadline that applies to you.

Estimate your full-year net business profit (income minus expenses from Schedule C).
Figure self-employment tax: profit × 92.35% × 15.3%, then set aside half as a deduction.
Estimate income tax on profit minus the half-SE-tax deduction and your standard deduction.
Add income tax and self-employment tax to get total expected tax for the year.
Compare to the safe harbors — the smaller of 90% of this year or 100%/110% of last year is your required payment.
Divide the required amount by four and pay each quarter through IRS Direct Pay, EFTPS, or by mailing a voucher.
Keep a record of each payment and confirmation number for your year-end return.

The cost of doing this yourself is zero beyond the tax owed; software like the major filing apps will do the worksheet for free. A CPA typically charges a few hundred dollars to set up your quarterly plan, which is worth it once income is uneven or you add employees.

Mistakes to Avoid

Each of these errors carries a real cost. Watch for all seven in your first year.

Forgetting self-employment tax. Budgeting only for income tax leaves you short by 15.3% of profit, the single most common first-year shortfall.
Assuming you owe nothing because it is year one. The $1,000 threshold still applies; the outcome is a penalty plus the full tax bill in April.
Missing the uneven due dates. The June payment covers only two months, and owners who assume even quarters pay late, triggering interest.
Spending the tax money. Treating gross revenue as take-home leaves no cash to pay the bill, forcing debt or an IRS payment plan.
Ignoring state estimated taxes. Most income-tax states have their own quarterly deadlines and penalties separate from the IRS.
Misreading “no tax liability.” Confusing a refund with zero total tax can make you wrongly assume the penalty waiver applies.
Underpaying an S-corp salary. Setting wages artificially low to dodge payroll tax invites an IRS reclassification and back taxes plus penalties.

Do’s and Don’ts

Do’s

Do set aside 25%–30% of every payment as you earn, because the bill includes both income and self-employment tax.
Do check last year’s total tax first, since it unlocks the safe harbor that often costs the least.
Do pay online through Direct Pay or EFTPS, which gives you a timestamped confirmation and stops late-payment disputes.
Do raise W-4 withholding if you also have a job, because withholding counts as paid evenly across the whole year.
Do keep a simple log of profit and payments, which makes filing in April fast and accurate.

Don’ts

Don’t wait until April to think about it, because the penalty accrues quarter by quarter and cannot be undone after the fact.
Don’t guess your profit blindly, since a low guess can drop you under the 90% safe harbor and trigger interest.
Don’t ignore your state, as state penalties add to the federal ones and use different dates.
Don’t mix business and personal cash, because untracked spending hides how much tax you owe.
Don’t assume an LLC changes your tax, since a single-member LLC is taxed exactly like a sole proprietor by default.

Pros and Cons of Paying Estimates in Year One

Pros

Avoids the underpayment penalty, which keeps more money in your pocket than the 6% Q2 2026 rate would cost.
Prevents an April cash crunch, because the bill is spread across the year instead of due all at once.
Builds tax discipline early, so growth years do not catch you off guard.
Keeps you in good standing, reducing the odds of IRS notices and collection activity.
Smooths budgeting, since paying quarterly makes your real take-home pay clear.

Cons

Ties up cash you might need, which hurts a business that is reinvesting heavily in year one.
Requires accurate forecasting, hard when first-year income is unpredictable.
Adds administrative work, four deadlines plus state filings to track.
Risk of overpaying, locking money with the IRS until your refund arrives.
Can be unnecessary if the zero-liability escape hatch already protects you from any penalty.

State Estimated Taxes

Start with federal, then check your state — they are separate systems. Most states with an income tax require their own quarterly estimates, often mirroring the federal April, June, September, and January schedule, but with their own forms and their own penalties. Never assume your state follows the federal safe harbors exactly, because conformity varies.

Nine states have no broad personal income tax at all — including Texas, Florida, Washington, Nevada, South Dakota, Wyoming, Alaska, and Tennessee — so a first-year owner there owes no state estimated income tax (though Texas and a few others impose separate business franchise or gross-receipts taxes). If you do live in an income-tax state, find your state tax agency for its specific estimated-tax form and dates, and treat its $1,000-style threshold as its own rule.

What to Do Next

Take these steps in order before your next deadline.

Pull last year’s Form 1040 and read the total tax line to see if the zero-liability or 100%-of-last-year safe harbor protects you.
Estimate your full-year profit and run the Form 1040-ES worksheet, including self-employment tax.
Pick the smaller safe-harbor target and divide it by the remaining quarters in 2026.
Set up a free account at IRS Direct Pay and schedule the next installment.
Check your state agency’s estimated-tax page and calendar its deadlines too.
Open a separate savings account and move 25%–30% of each payment into it.
Call a CPA if your income is uneven, you have employees, or you elected S-corp status — that complexity is where professional help pays for itself.

This article is educational and not a substitute for advice from a licensed tax professional for your specific situation.

Frequently Asked Questions

Do I have to pay estimated taxes in my very first year of business? Maybe. For 2026 you must pay if you expect to owe $1,000 or more. But if your prior year had zero total tax and you were a citizen all 12 months, you owe no penalty even if you skip estimates.

How much do I need to owe before estimated taxes are required? $1,000. For tax year 2026, individuals must generally make estimated payments if they expect to owe at least $1,000 after withholding and refundable credits, per IRS rules.

What is the safe harbor for estimated taxes? Pay 90% of this year or 100% of last year. Meeting either protects you from the penalty; the prior-year figure rises to 110% if your last-year AGI topped $150,000.

Can a brand-new business legally pay zero estimated taxes? Yes. If you had no tax liability for the full prior year and were a U.S. citizen or resident all 12 months, the underpayment penalty does not apply, regardless of what you owe this year.

When are estimated taxes due in 2026? April 15, June 15, September 15, and January 15, 2027. These four federal deadlines cover income earned in tax year 2026, with uneven periods between them.

Does self-employment tax count in my estimate? Yes. Your estimate must include the 15.3% self-employment tax on net profit, not just income tax. Forgetting it is the most common first-year mistake.

What happens if I miss a quarterly payment? You face an underpayment penalty. It is interest on the shortfall, charged at a 6% annual rate for the quarter beginning April 2026, accruing from the missed due date until paid.

I started my business mid-year — do I owe back payments? No. You only owe estimates for the quarters after you began earning. An August start means your first installment is the September 15 deadline, not the spring ones.

Does forming an LLC change whether I pay estimated taxes? No. A single-member LLC is taxed like a sole proprietor by default, so you still pay through personal Form 1040-ES estimates on your business profit.

Do C corporations follow the same estimated tax rules? No. A C corporation files Form 1120-W and must pay if it expects to owe $500 or more, at the flat 21% rate, using its own corporate safe harbors.

Can I just increase my W-2 withholding instead of paying estimates? Yes. If you also have a job, raising withholding on Form W-4 covers your business tax and counts as paid evenly all year, avoiding quarterly checks.

Do I owe state estimated taxes too? Usually, if your state has an income tax. Most income-tax states require their own quarterly estimates with separate forms and penalties; nine states have no broad personal income tax.

Word count: approximately 3,650 words.

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