Quarterly Estimated Tax Spreadsheet

About this template

This quarterly estimated tax spreadsheet helps you set tax aside as you earn it, instead of finding out what you owe in April. It is built for self employed people, and each quarter reads your own income and expenses, so a slow quarter sets aside less: four real figures, not four equal guesses.

Please read: This is a tracker tool only, not financial, tax, legal, medical or any other professional advice or advisory service. It records and calculates what you enter; you are solely responsible for checking all figures, rates, dates and results and for every decision you make. By purchasing, downloading or using it, you accept these terms (your statutory consumer rights are not affected).

How the quarterly tax set-aside works

• The Estimated Tax tab shows profit, set-aside, due date and a running total for every quarter
• One rate on the Setup tab covers income tax plus self-employment tax or National Insurance
• Installment dates are filled in, and you can overwrite them if yours differ
• The dashboard shows six live figures and the four quarters side by side

One ledger behind every figure

You enter money in on one tab and money out on another, pick a tax rate for each line, and everything else reads those two. The monthly view, the quarterly view, the profit and loss statement, the sales tax worksheet and the dashboard all recalculate. Nothing is typed twice, and no number on a report can disagree with the ledger it came from.

Twelve connected tabs

• Income: 500 rows, with the tax split out on every line
• Expenses: 500 rows, split the same way
• Setup: your categories, your tax rates and your set-aside percentage
• Monthly: twelve months of income, spending, profit and margin
• Quarterly: the four quarters, with tax due and tax to set aside
• Profit and Loss: every category with its share and the margin
• Sales Tax: collected against paid, by rate and by quarter
• Custom Range: pick any two dates and everything follows
• Comparison: this year against last, month by month
• Balances: what each account took in and paid out
• Estimated Tax: profit, set-aside, due date and running total per quarter
• Dashboard: six live figures and the four quarters
• Start Here: walks you through setup in a few minutes

What it does for you

• Splits sales tax out of every line automatically
• Nets tax collected against tax paid, quarter by quarter
• Turns real profit into a quarterly set-aside at your own rate
• Ranks every category by its share of income and of spending
• Compares any two years month by month, as percentages
• Charts that redraw from your own numbers

It also works as a tax planner and a full income tracker and expense tracker, with a profit and loss statement built in. The filled copy holds two full years of demo data, so the comparison view has something real to compare.

Works with

• Microsoft Excel 2016, 2019, 2021 and Microsoft 365, on Windows and Mac, and LibreOffice. No Microsoft 365 subscription needed, and no Google account needed for the Excel files.
• Google Sheets with a free Google account. You get real spreadsheet files, not a PDF with a link in it.
• No add-ins, no macros, no subscription and no bank connection

What you download

• The Excel workbook, filled with a worked example
• The same workbook, blank and ready for your own numbers
• The instruction guide, with one-click links to the Google Sheets versions (filled and blank)
• The terms of use as a PDF

Your files are ready as soon as payment clears. The template is for use in your own business; please do not share or resell the files. Questions before or after you buy? Use our contact page and we will help.

Frequently asked questions

Can I use it in Excel and Google Sheets?

Yes. The Excel workbook runs in Excel 2016 or later on Windows and Mac, and the instruction guide holds two one-click links to the Google Sheets versions.

How does it work out each quarter's set-aside?

Each quarter reads the profit in your own income and expense registers and applies your rate, so a slow quarter sets aside less than a busy one.

Can it include self-employment tax or National Insurance?

Yes. One rate on the Setup tab covers income tax plus self-employment tax or National Insurance, at the percentage you choose.

What if my payment dates are different?

The installment dates can be overwritten if yours differ.

Does it calculate my tax bill for me?

No. It sets money aside at the rate you enter and records what you enter. It is a bookkeeping tool, not tax or accounting advice.