QUARTERLY ESTIMATED TAX CALENDAR · RUNS IN YOUR BROWSER · NOTHING UPLOADED

What do you actually owe the IRS this quarter — and when?

Enter last year's total tax, this year's own estimate (if you have one), and what you've already paid. This applies the IRS's own safe-harbor rule to get a required annual payment, splits it across the four quarters, and shows the real due date for each — adjusted for weekends and federal holidays, not just "the 15th." Then download a calendar file with a reminder before each one.

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Already know your gig-driving net pay and just need to know what to set aside for taxes as you go? See the gig driver net pay calculator's per-session tax reserve — this page is the filing calendar for the quarterly payment itself.

Already have a rough income estimate and just want the safe-harbor floor and the real due dates? See this calendar vs. Keeper's quarterly tax calculator for when each tool is the right one to reach for.

Already tracking this in a spreadsheet? See this calendar vs. a spreadsheet for the three things a formula usually gets wrong quietly — the due date itself, the safe-harbor comparison, and what happens after a missed quarter.

Already missed a due date? See what happens if you miss a quarterly estimated tax payment for how much the next one actually needs to be.

Sell on Etsy, eBay, Poshmark, or another marketplace and already got a Form 1099-K? The 1099-K reconciliation worksheet is the other end of the same tax year — this page sets aside payments as you go, that one reconciles what the marketplace actually reported once the year is over.

Selling a rental or investment property this year instead of just filing on its rental income? The depreciation recapture calculator estimates the tax on the sale itself — this page is for the ongoing quarterly filing, that one is for the one-time sale.

Your numbers

Already paid toward estimated tax this year, per quarter ($)

Enter at least last year's total tax or this year's estimate above, then click Calculate.

What this does and doesn't do

This computes the IRS safe harbor — the smaller of 90% of this year's estimated tax or 100% (110% if last year's AGI was over $150,000, or $75,000 married filing separately) of last year's tax — and splits it evenly across four quarters, the same default method IRS Form 2210 uses. It does not file anything, does not know your actual final tax bill, and does not model the Annualized Income Installment Method for income that arrived unevenly across the year. Treat every number here as a planning target to verify against the current year's official IRS instructions or a tax professional before paying, never as a filed amount or a determination made on your behalf.

Common questions

How much estimated tax do I actually have to pay each quarter?

The IRS safe harbor is the smaller of 90% of this year's estimated tax or 100% of last year's total tax (110% if last year's adjusted gross income was over $150,000, or $75,000 if married filing separately). Paying that amount avoids an underpayment penalty even if your actual final tax bill is higher. This calculator applies that rule to your own numbers and splits the result evenly across the four quarters.

Are the quarterly due dates always April 15, June 15, September 15, and January 15?

Those are the nominal dates, but each one shifts to the next business day when it falls on a weekend or a federal holiday, and the shift can chain through more than one day. Recent real examples: the Q1 2022 deadline moved to April 18 (Emancipation Day observed the 15th, then a weekend), and the Q4 2023 deadline moved to January 16, 2024 because January 15 was Martin Luther King Jr. Day that year. This tool computes the adjusted date for the tax year you enter rather than assuming the 15th.

What if my income is uneven across the year?

This tool splits the annual requirement into four equal quarters, which is the IRS's own default (regular) method under Form 2210. If your income arrives unevenly — a seasonal business, one large late-year payment — the Annualized Income Installment Method (Form 2210 Schedule AI) can lower or eliminate a penalty on the earlier, lower-income quarters. This tool does not compute that method; a tax professional or the IRS instructions for Form 2210 can.

What if I already missed or underpaid an earlier quarter?

This calculator tracks that too, once you enter what you've actually paid per quarter. It compares the total required by each due date that has already passed against the total you've actually paid across every quarter, not just one row at a time. If you're behind, the schedule shows a catch-up amount for the next payment — larger than the flat quarterly share, sized to get back to the safe-harbor pace in one payment. If you paid ahead of schedule instead, the next payment can be smaller, down to zero, and is never shown as negative.

Is this tax advice?

No. It applies a published IRS safe-harbor formula to numbers you already have from your own return, as a planning worksheet — not a filed amount, not a penalty determination, and not a substitute for a tax professional or the current-year IRS instructions.