Who has to make estimated tax payments?

You must make estimated payments if you expect to owe $1,000+ when filing your return and your withholding/credits won't cover at least 90% of this year's tax or 100% of last year's tax (110% if AGI exceeded $150,000). This typically applies to freelancers, self-employed individuals, landlords, and investors with large capital gains.

When are estimated tax payments due?

Quarterly: April 15, June 15, September 15, and January 15 of the following year. If the date falls on a weekend or holiday, the deadline moves to the next business day.

What happens if I don't pay estimated taxes?

You'll owe an underpayment penalty (currently ~8% annualized rate) on the amount you should have paid. The penalty is charged from the due date until you pay. You can avoid penalties by paying at least 100% of last year's tax (110% if AGI > $150K) or 90% of this year's tax.

Estimated Tax Payments: Who Owes Them and How to Pay (2026)

If you’re self-employed, a freelancer, or have significant income without tax withholding, you likely need to make quarterly estimated tax payments to avoid penalties.

2026 Estimated Tax Payment Deadlines

Payment Period	Due Date	Income Period Covered
Q1	April 15, 2026	January 1 - March 31
Q2	June 15, 2026	April 1 - May 31
Q3	September 15, 2026	June 1 - August 31
Q4	January 15, 2027	September 1 - December 31

Note: Q2 and Q3 don’t cover equal three-month periods.

Who Must Pay Estimated Taxes

Situation	Estimated Payments Required?
W-2 employee (adequate withholding)	No
W-2 employee + significant side income	Likely yes
Freelancer / independent contractor	Yes
Self-employed business owner	Yes
Landlord with rental income	Usually yes
Large capital gains from investments	Yes, for the year of the gain
Retiree with pension + Social Security	Depends on withholding
Received large one-time payment	Yes, for that quarter

Safe Harbor Rules (How to Avoid Penalties)

Method	What to Pay	Best For
90% of current year tax	≥90% of what you’ll owe for 2026	People who can predict income well
100% of prior year tax	≥100% of what you owed for 2025	Simpler; works if income is stable or growing
110% of prior year tax	≥110% of 2025 tax (if AGI > $150K)	High earners (the safe harbor threshold is higher)

Example: Safe Harbor Calculation

Last Year’s Total Tax	Safe Harbor (100%)	Safe Harbor (110%, AGI > $150K)	Quarterly Payment
$20,000	$20,000	$22,000	$5,000 / $5,500
$40,000	$40,000	$44,000	$10,000 / $11,000
$60,000	$60,000	$66,000	$15,000 / $16,500
$80,000	$80,000	$88,000	$20,000 / $22,000

How to Calculate Estimated Tax Payments

Step 1: Estimate Total Income

Income Source	Estimated Annual Amount
Self-employment income	$_____
Freelance / 1099 income	$_____
Rental income	$_____
Investment income (dividends, capital gains)	$_____
Other income not subject to withholding	$_____
Total estimated income	$_____

Step 2: Calculate Tax Owed

Calculation	Amount
Estimated total income	$_____
Minus: deductions (standard or itemized)	-$_____
Minus: QBI deduction (20% of qualified business income)	-$_____
Taxable income	$_____
Federal income tax (from tax brackets)	$_____
Plus: self-employment tax (15.3% on 92.35% of SE income)	+$_____
Minus: W-2 withholding (if any)	-$_____
Minus: tax credits	-$_____
Estimated tax owed	$_____
Quarterly payment (÷4)	$_____

How to Pay

Payment Method	Processing Time	Fee
IRS Direct Pay (bank transfer)	Immediate	Free
EFTPS (Electronic Federal Tax Payment System)	1 business day	Free
IRS2Go app	Immediate	Free
Credit card (via approved processor)	Immediate	1.85-1.98%
Check by mail (Form 1040-ES)	1-2 weeks	Stamp cost

Underpayment Penalty

Factor	Details
Current penalty rate (2026)	~8% annual rate (changes quarterly)
How it’s calculated	Applied to underpaid amount from due date to payment date
Can be avoided by	Meeting one of the safe harbor rules
Waiver available?	Yes, for certain circumstances (casualty, disaster, retirement)

Penalty Example

Scenario	Impact
Owed $4,000 per quarter, paid $0	~$320+ in penalties for the year
Owed $4,000 per quarter, paid $3,000	~$80+ in penalties for the year
Met safe harbor (100% of prior year)	$0 penalty, even if you owe at filing

The Bottom Line

If you have income without tax withholding (self-employment, freelancing, investments, rental income) and expect to owe $1,000+, make quarterly estimated payments. The simplest approach: pay 100% of last year’s tax divided by four (110% if AGI > $150K). This guarantees no penalty regardless of how much you actually owe. Use IRS Direct Pay—it’s free and takes 2 minutes.