Quarterly Estimated Tax Calculator Spreadsheet – Self-Employed Tax Estimator for 1099 Workers

QUARTERLY TAX CALCULATOR — Stop Guessing What to Send the IRS.

Excel calculator that takes your YTD income, expense totals, and filing status — and tells you what to send the IRS each April, June, September, and January. Includes the self-employment tax (15.3%), federal income tax brackets, and a buffer setting so you never get hit with an underpayment penalty.

WHAT'S INCLUDED:— Quarterly input form (income, expenses, deductions, prior tax paid)— Auto-calc self-employment tax— Auto-calc federal income tax using current brackets— Suggested quarterly payment amount— Annual reconciliation tab— Safe harbor calculator (avoid underpayment penalty)— Works with Microsoft Excel and Google Sheets

WHO THIS IS FOR:— 1099 freelancers, contractors, and consultants— Etsy / Amazon / Shopify sellers— Side-hustlers with W-2 + 1099 income— Anyone who's ever been surprised by a tax bill

Not tax advice — consult a CPA for high-income or complex returns.

INSTANT DOWNLOAD.

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