How much should I pay in quarterly estimated taxes?

Total expected annual tax ÷ 4. Or use the safe harbor: 100% of prior year tax ÷ 4 (110% if prior year AGI was above $150,000). Safe harbor prevents penalties even if your current-year income is higher.

What happens if I pay too much quarterly?

You receive a refund at filing or can apply the overpayment to next year’s estimates. There is no penalty for overpayment. Slight overpayment is actually desirable — you earn interest on the overpayment from the IRS (currently minimal) and avoid any underpayment risk.

Can I skip quarterly payments and pay all at once in April?

You can, but you’ll owe an underpayment penalty (8% annualized in 2025) on the amounts not paid each quarter. At $20,000 annual tax with no quarterly payments, the penalty is approximately $800–$1,100. Always pay quarterly to avoid this easily avoidable cost.

What if my income is very variable and I don’t know my quarterly total?

Use the annualized income installment method (Form 2210, Annualized Income Installment Method). You pay 90% of what you actually earned in each quarter rather than equal installments. This prevents overpayment in slow quarters and the underpayment penalty in heavy income quarters.

Does my state have quarterly estimated taxes too?

Most states with income taxes require quarterly estimated payments on the same or similar schedule. The calculation and due dates vary by state. Check your state’s revenue department website for specifics. State underpayment penalties vary but are typically 5–12% annualized.

Quarterly Estimated Tax Payments: A Complete Guide for Self-Employed Workers

Quarterly estimated taxes are the mechanism by which self-employed workers pre-pay their annual tax liability throughout the year. Missing or underpaying quarterly estimates triggers an 8% annualized penalty — avoidable with simple quarterly planning.

2025 Quarterly Payment Schedule

2025 quarterly estimated tax payment due dates

Quarter	Income Period	Payment Due Date	Penalty If Missed
Q1 2025	January 1 – March 31	April 15, 2025	8% annualized on underpaid amount
Q2 2025	April 1 – May 31	June 16, 2025	8% annualized on underpaid amount
Q3 2025	June 1 – August 31	September 15, 2025	8% annualized on underpaid amount
Q4 2025	September 1 – December 31	January 15, 2026	8% annualized on underpaid amount

A freelance marketing consultant earning $80,000 net SE income expects to owe approximately $18,000 in total federal taxes. Her quarterly payment = $18,000 ÷ 4 = $4,500 per quarter. She pays via IRS Direct Pay on each due date, taking under 5 minutes each time.

💡Safe Harbor: Pay 100% of Prior Year Tax

The safest quarterly payment strategy: divide your prior year’s total tax by 4 and pay that each quarter. If your prior year tax was $16,000, pay $4,000 per quarter. Even if you earn more this year, you won’t owe an underpayment penalty — though you’ll owe the balance at filing.

How to Calculate Your Quarterly Payment

Method 1 (Most Common): Estimate your full-year net SE income. Calculate expected SE tax (net SE income × 92.35% × 15.3%). Add estimated income tax. Subtract any withholding from W-2 income. Divide by 4. Method 2 (Safe Harbor): Use 100% of prior year tax ÷ 4 (110% if prior year AGI exceeded $150,000).

How to Pay

IRS Direct Pay (free, no account needed): visit irs.gov/payments, select 'Estimated Tax,' enter your SSN and bank information. Payment confirms immediately. EFTPS (Electronic Federal Tax Payment System): free account-based system allowing scheduling payments in advance. Both are direct bank deductions with instant IRS confirmation.

Calculate Your 2025 Quarterly Payment Amounts

Enter your projected net SE income to see your total expected tax and quarterly payment schedule.

Open Self-Employment Tax Calculator →

Quarterly Estimated Tax Payments: A Complete Guide for Self-Employed Workers

2025 Quarterly Payment Schedule

How to Calculate Your Quarterly Payment

How to Pay

Frequently Asked Questions

Frequently Asked Questions

More Self-Employment Tax Guides

How to Use a Self-Employment Tax Calculator: Beginner Guide

Self-Employment Tax Benchmarks: What Should You Expect to Pay?

Self-Employment Tax on $50,000 Net Income: Full Breakdown