Quarterly Estimated Tax Calculator Spreadsheet | Self Employed 1099 Tax Estimator Excel Google Sheets | Freelancer Tax Planner Template

Stop guessing what you owe the IRS. This Self-Employed Quarterly Estimated Tax Calculator does the math for you — enter your income and expenses and instantly see your self-employment tax, federal and state income tax, and exactly what to pay each quarter.

Built for freelancers, 1099 contractors, gig workers, Etsy & Amazon sellers, and anyone who dreads estimated taxes. It even tells you the percentage of every payment to set aside, so the money is always there when the IRS due date comes.

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WHAT'S INCLUDED (8 Tabs)
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✅ Instructions — Simple step-by-step guide to get started in minutes
✅ Setup & Tax Rates — Filing status, state rate & prior-year tax (set once)
✅ Income & Expenses — Log income by client and deductions by Schedule C category, all four quarters
✅ Tax Estimate — Auto self-employment tax (15.3%) + federal & state income tax, total owed
✅ Quarterly Schedule — All four IRS due dates with a paid? checkbox and running balance
✅ Set-Aside Planner — Your recommended set-aside % and how much to bank per month / paycheck
✅ Safe Harbor — 100%/110%-of-prior-year rule so you never get an underpayment penalty
✅ Dashboard — Earned, owed, paid & remaining at a glance with a payment progress bar

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KEY FEATURES
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🧮 AUTOMATIC SE TAX — Social Security + Medicare calculated for you, wage-base cap built in
🏦 ALL 4 IRS DUE DATES — Apr 15, Jun 15, Sep 15 & Jan 15, with paid tracking
💸 SET-ASIDE % — know exactly what to save from every single payment you receive
🛡️ SAFE-HARBOR CALCULATOR — pay enough to dodge the IRS penalty, even if income jumps
🧾 SCHEDULE C DEDUCTIONS — log expenses by category to lower your taxable income
🗺️ ANY STATE — editable state tax rate field works in all 50 states
📊 LIVE DASHBOARD — total owed, paid & remaining update automatically

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HOW IT WORKS
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1️⃣ Download and open in Excel or Google Sheets
2️⃣ Enter your filing status, state rate & prior-year tax (once)
3️⃣ Log income and expenses by quarter
4️⃣ Instantly see what you owe and what to pay each quarter

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COMPATIBILITY
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✔ Microsoft Excel (Desktop, Online & Mobile)
✔ Google Sheets (Free — just import the file)
✔ Works on PC, Mac, iPhone, iPad & Android

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INSTANT DIGITAL DOWNLOAD
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This is a digital product. No physical item will be shipped. You'll receive the .xlsx file immediately after purchase and can reuse it every tax year.

Perfect for freelancers, 1099 contractors, self-employed business owners, consultants, gig drivers, and online sellers who want to take the stress out of quarterly taxes.

Please note: this is a personal organization and planning tool, not tax or financial advice. All tax figures are estimates based on the rates you enter — confirm exact amounts with a qualified tax professional or the IRS before paying or filing.

Questions? Message us anytime — we're happy to help!

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