Self-employed people pay 2026 estimated taxes in four installments: April 15, June 15, and September 15, 2026, and January 15, 2027 — the next deadline is September 15, 2026. Payments are required once you expect to owe $1,000 or more for the year after withholding and credits. Pay 100% of last year's total tax (110% if your prior-year AGI topped $150,000), or 90% of this year's tax, in equal installments, and the IRS cannot charge an underpayment penalty.
Key takeaways:
Yes, if:
No, if:
When I moved from the UK, where the self-employed settle up once a year with a payment-on-account system, the US pay-four-times rule was the single biggest surprise of my first tax year.
Legal citation: IRC §6654(e) defines the exceptions to estimated tax requirements.
Take your total tax from last year's return (Form 1040, Line 24) and divide by four. Pay that amount each quarter.
Last year's total tax: $18,000 Quarterly payment: $18,000 ÷ 4 = $4,500 on April 15, June 15, September 15, and January 15
If your prior year AGI exceeded $150,000 ($75,000 if married filing separately), use 110% of last year's tax:
Last year's total tax: $30,000, with AGI of $180,000 Safe harbor amount: $30,000 × 110% = $33,000 Quarterly payment: $33,000 ÷ 4 = $8,250
This method guarantees no penalty, regardless of how much more you earn this year. If your actual tax exceeds the safe harbor amount, you'll owe the difference at filing time — but no penalty.
Estimate your total tax for the current year based on expected income and expenses. Pay at least 90% of this amount in four installments.
| Step | Amount |
|---|---|
| Estimated 2026 business income | $100,000 |
| Estimated business expenses | −$25,000 |
| Net profit | $75,000 |
| Self-employment tax ($75,000 × 92.35% × 15.3%) | $10,597 |
| Federal income tax (single, standard deduction, QBI applied) | $4,898 |
| Total estimated tax | $15,495 |
| 90% safe harbor | $13,946 |
| Quarterly payment | $3,487 |
Risk: If you underestimate and pay less than 90% of actual tax, you'll owe a penalty on the shortfall.
If your income varies significantly by quarter, you can use Form 2210, Schedule AI to calculate payments based on actual income earned in each period. This prevents overpaying early in the year when income is lower.
When to use this: Seasonal businesses, real estate agents, consultants with project-based income, or any situation where income is much higher in some quarters than others.
Your quarterly estimated payment covers both:
Many first-time self-employed people only calculate income tax and forget the SE tax, which is often the larger amount.
Example at $80,000 net profit (single filer):
Self-employment tax: $80,000 × 92.35% × 15.3% = $11,304 Federal income tax (after the standard deduction and QBI deduction): about $5,344 Total tax: about $16,648, so each quarterly payment is roughly $4,162
Use our Quarterly Tax Calculator to estimate both components for your state and income.
IRS Direct Pay: irs.gov/directpay
EFTPS: eftps.gov
IRS Online Account: irs.gov/account
Debit/Credit Card: Through IRS-approved processors
Send Form 1040-ES payment voucher with a check or money order to the address listed on the voucher. Allow 5-7 business days for processing. See our Form 1040-ES guide for the voucher walkthrough.
Make payments via your mobile device using Direct Pay or card.
If you don't pay enough estimated tax, the IRS charges a penalty equal to its underpayment interest rate on the shortfall. That rate is 7% for Q3 2026 (it was 7% in Q1 and 6% in Q2 2026); the IRS resets it quarterly at the federal short-term rate plus 3 points.
The penalty runs from the due date of each quarterly payment to the earlier of the payment date or April 15 of the following year.
Example: you should have paid $5,000 on April 15 but paid $0.
Unpaid for a full year: $5,000 × 7% = $350 Paid on September 15 instead (5 months late): $5,000 × 7% × 5/12 = $146
Our Estimated Tax Penalty Calculator runs this math for your actual payment dates, and our estimated tax penalty guide covers Form 2210 and penalty waivers.
✅ Pay 100% of prior year's tax (110% if AGI exceeded $150,000) in four equal installments ✅ Pay 90% of current year's tax in four installments ✅ Owe less than $1,000 at filing time ✅ Have no tax liability from the prior year
The prior year safe harbor is the most popular method because it's certain: you know last year's tax, and dividing by four is simple.
Legal citation: IRC §6654(d) defines the required annual payment and safe harbor rules; IRS Publication 505 explains the 90%/100%/110% tests.
Many self-employed people earn different amounts each quarter. Here are three approaches:
Use the prior year safe harbor regardless of when income arrives. Pay the same amount each quarter.
Best for: People with somewhat predictable income who want simplicity.
Recalculate your estimated tax as income arrives. Pay more in quarters when you earn more. A consultant with seasonal income setting aside 28% might pay:
| Quarter | Net profit | Payment (28%) |
|---|---|---|
| Q1 | $10,000 | $2,800 |
| Q2 | $30,000 | $8,400 |
| Q3 | $15,000 | $4,200 |
| Q4 | $25,000 | $7,000 |
| Total | $80,000 | $22,400 |
Best for: People with highly variable income who don't want to overpay in slow quarters.
File Form 2210, Schedule AI with your tax return to prove that your unequal payments matched your actual income pattern. This eliminates penalties even if payments weren't equal.
Best for: People with extremely uneven income (e.g., most income in Q4) who would otherwise face penalties for low early-quarter payments.
If this is your first year of self-employment, you don't have a prior year self-employment tax return to base the safe harbor on. Here's what to do:
If you had W-2 income last year, your prior year total tax includes what was withheld. You can use the safe harbor on that amount if you want, even though your income sources changed.
For a complete first-year filing guide, see our independent contractor taxes guide.
Problem: Self-employed individual earns $80,000 throughout the year and pays nothing until April 15 of the following year.
Impact: At the 7% rate, roughly $700-$800 in underpayment penalties on a ~$16,600 liability, plus cash flow stress from a large lump-sum payment.
Solution: Start quarterly payments immediately. Even late quarterly payments reduce the penalty compared to waiting until filing.
Problem: Calculating estimated payments based only on income tax brackets, forgetting the 15.3% self-employment tax.
Impact: Underpaying by 30-50% of your actual liability. At $80,000 net profit, SE tax is $11,304 — larger than the ~$5,344 income tax.
Solution: Include both SE tax and income tax in your quarterly calculations.
Problem: Trying to estimate this year's tax precisely and sometimes getting it wrong, resulting in penalties.
Impact: Penalties averaging $200-$800 per year for most self-employed individuals.
Solution: Use the prior year safe harbor. It's simple, it's certain, and it eliminates penalty risk entirely.
Problem: Making federal estimated payments on time but forgetting that most states also require quarterly payments.
Impact: State underpayment penalties (rules and rates vary by state; California even uses a different 30/40/0/30 payment split).
Solution: Set up both federal and state quarterly payments. Many states follow the same deadlines as the IRS.
The hard part of estimated taxes isn't paying, it's knowing the right number in week 37 of an unpredictable year. Jupid connects to your bank account, categorizes income and expenses automatically at 95.9% accuracy, and keeps a running estimate of what you owe. Before each deadline it reminds you in WhatsApp or iMessage, and you can ask "How much should I pay for Q3?" and get an answer computed from your actual year-to-date profit rather than a January projection. Try Jupid
| Item | 2026 Amount |
|---|---|
| Estimated tax threshold | $1,000 owed |
| Safe harbor (standard) | 100% of prior year tax |
| Safe harbor (high income) | 110% if AGI over $150,000 |
| Underpayment penalty rate | 7% (Q3 2026; reset quarterly) |
| Q1 deadline | April 15, 2026 |
| Q2 deadline | June 15, 2026 |
| Q3 deadline | September 15, 2026 |
| Q4 deadline | January 15, 2027 |
Quarterly estimated taxes are a pay-as-you-go system. The IRS wants your money throughout the year, not in one lump sum, and the system is predictable once you understand the safe harbor rules. Use the prior-year safe harbor, transfer 25-30% of every payment you receive into a tax account, and remember that SE tax is usually the biggest piece of the bill.
For state-specific estimated tax guides, see California Tax Deadlines 2026 (with the unique 30/40/0/30 payment split), New York Estimated Tax Payments 2026 (including NYC and MCTMT), and Self-Employed Tax Deadlines Calendar 2026.
Disclaimer
This article provides general information about quarterly estimated tax payments and should not be considered tax advice. The estimated tax requirements, safe harbor rules, and penalty calculations described apply to federal taxes. Most states have separate estimated tax requirements with their own rules and deadlines. For advice specific to your situation, consult with a qualified tax professional.
Tax Year: 2026 Last Updated: July 7, 2026
CEO & Co-Founder
Fintech CEO with 10+ years building accounting and financial technology products. Previously co-founded and scaled an AI-powered accounting platform to $30M revenue and 100K+ business users, achieving 30,000 customers per accountant through automation — recognized by CNBC as a top fintech company. Holds a Master's in Management Information Systems. At Jupid, he leads the development of AI-native bookkeeping, tax, and compliance tools designed for freelancers and small business owners.
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