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Form 1040-ES

Estimated Tax for Individuals

Use this when: You're self-employed and need to pay taxes quarterly instead of waiting until April.

Who needs it: Gig workers, freelancers, contractors who expect to owe $1,000+ in taxes
Payment due dates: April 15, June 15, September 15, January 15
Why you need it: Avoid underpayment penalties (the IRS charges interest if you wait until April to pay everything)
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Understanding Quarterly Estimated Taxes

The Basics Why quarterly payments exist

What it is: Paying your taxes in 4 chunks throughout the year instead of one lump sum in April.

How W-2 jobs work:

Your employer withholds taxes from every paycheck and sends them to the IRS. By April, you've already paid most of your tax bill.

How gig work is different:

Nobody withholds taxes from your DoorDash pay or freelance invoices. You get the full amount and YOU'RE responsible for paying taxes.

WHY THE IRS WANTS QUARTERLY PAYMENTS: They don't want to wait until April for your money. They want it as you earn it, just like W-2 withholding.
⚠ THE PENALTY: If you don't pay quarterly and you owe $1,000+ in April, the IRS charges underpayment penalties (basically interest on the tax you should have paid earlier). It's usually 3-8% depending on IRS rates.
Due Dates When to pay

Four payments per year:

Q1: April 15

Covers: January 1 - March 31

Q2: June 15

Covers: April 1 - May 31

Q3: September 15

Covers: June 1 - August 31

Q4: January 15 (next year)

Covers: September 1 - December 31

⚠ NOTICE: The quarters aren't equal. Q2 is only 2 months, Q3 is 3 months, and Q4 is 4 months. Don't ask why — the IRS just does it this way.
IF YOU MISS A PAYMENT: Don't panic. Pay the next one on time. The penalty is calculated per quarter, so missing one doesn't doom you. Just don't skip multiple quarters.
How Much to Pay Calculating your quarterly payment

Three methods (pick one):

Method 1: The Safe Harbor (easiest)

→ Pay 100% of last year's total tax bill, divided by 4

EXAMPLE:

Last year Téa owed $3,200 total tax (income tax + SE tax).

This year, she pays: $3,200 ÷ 4 = $800 per quarter

Even if she makes MORE this year, she won't owe penalties as long as she pays $800 × 4 quarters.

WHY THIS WORKS: The IRS says if you pay at least what you paid last year, you're safe from penalties — even if you owe more in April. You'll just owe the difference then (no interest).

Method 2: The 90% Rule

→ Pay 90% of what you'll owe THIS year, divided by 4

EXAMPLE:

Téa estimates she'll owe $4,000 this year.

She pays: ($4,000 × 0.90) ÷ 4 = $900 per quarter

As long as she's close to 90%, no penalty.

⚠ THE RISK: If you underestimate your income, you might not hit 90% and could owe penalties. Method 1 (safe harbor) is safer.

Method 3: The Shortcut for First-Year Gig Workers

→ Estimate 25-30% of your gross income and pay quarterly

EXAMPLE:

Téa earns $10,000 in Q1.

She saves 25%: $10,000 × 0.25 = $2,500

She pays $2,500 by April 15.

Repeat each quarter based on that quarter's income.

WHY 25-30%? Covers income tax (10-22% bracket) + self-employment tax (15.3%). Better to overpay and get a refund than underpay and owe penalties.
How to Pay Payment options

Option 1: IRS Direct Pay (free, easiest)

→ Go to irs.gov/payments

→ Choose "Estimated Tax" and "1040-ES"

→ Enter your bank info (they pull directly from your account)

→ Get confirmation number

Option 2: Mail a check

→ Download Form 1040-ES from IRS website

→ Fill out the payment voucher (includes your SSN, address, payment amount)

→ Mail with a check by the due date

⚠ DON'T USE REGULAR CHECKS: Use the voucher from Form 1040-ES so the IRS knows it's an estimated payment (not your regular tax return payment).

Option 3: EFTPS (Electronic Federal Tax Payment System)

→ Sign up at eftps.gov

→ Schedule payments in advance

→ Good if you want to automate quarterly payments

Option 4: Credit/debit card (has fees)

→ Use IRS-approved payment processors

→ They charge 1.85-1.99% of the payment

→ Only worth it if you're getting credit card rewards that offset the fee

Quick Reference Quarterly payment estimates

If your total annual tax will be around:

$2,000 total tax

Pay $500/quarter

$4,000 total tax

Pay $1,000/quarter

$6,000 total tax

Pay $1,500/quarter

$8,000 total tax

Pay $2,000/quarter

$10,000 total tax

Pay $2,500/quarter

$12,000 total tax

Pay $3,000/quarter

HOW TO ESTIMATE YOUR TOTAL TAX: Use last year's return as a baseline. Add 20-30% if your income grew significantly. Subtract 20-30% if income dropped.

Common Mistakes to Avoid

1

Waiting until April to pay everything

Why it's wrong: You'll owe penalties on the amount you should have paid quarterly. Even if you can afford the lump sum, you'll pay extra in penalties.

Fix: Set up quarterly payments. Even rough estimates (25% of income) prevent penalties.

2

Forgetting about state estimated taxes

Why it's wrong: Most states also require quarterly payments if you're self-employed. You could owe state penalties too.

Fix: Check your state tax agency website for estimated tax requirements. Usually similar due dates as federal.

3

Not adjusting payments when income changes

Why it's wrong: If you had a big month in Q3 but paid the same as Q1, you might underpay and owe penalties on the shortage.

Fix: Recalculate each quarter based on actual income for that quarter. It's okay to pay different amounts each quarter.

4

Confusing "payment due" with "period covered"

Why it's wrong: The June 15 payment covers April 1-May 31 income (only 2 months), not Jan-June. People overpay thinking it's 6 months.

Fix: Remember: Q1=3mo, Q2=2mo, Q3=3mo, Q4=4mo. Adjust your payment to match the period length.

5

Not keeping payment confirmations

Why it's wrong: If the IRS loses your payment record, you have no proof you paid.

Fix: Save confirmation numbers from online payments. Keep copies of mailed checks and vouchers. Screenshot payment receipts.

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You Might Also Need

Schedule SE

Self-Employment Tax

Calculate how much SE tax to include in your quarterly payments
Schedule C

Profit or Loss from Business

Your profit determines how much estimated tax you need to pay
W-9

Request for Taxpayer ID

Make sure clients have your correct info to avoid backup withholding

Additional Resources

Official IRS Resources

Related Guides

Free Tools

Need More Tax Help?

The Gen Z Tax Playbook includes a quarterly tax calculator and payment tracker to help you stay on top of estimated taxes all year.

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