Healthy year
Annual revenue is $120,000, expenses are $32,000, income tax is 22%, and self-employment tax is 15.3%.
Total tax is $32,824 and quarterly estimate is $8,206.
This shows how much cash to keep aside so tax does not surprise you later.
Self-employed Tax Estimator
Use this calculator when you want a practical estimate of the tax you should keep aside from self-employed income.
Inputs
Self-employed Tax Estimator
Estimate how much tax to set aside from self-employed income.
Results
Tax estimate
Use this to plan for income tax and self-employment tax throughout the year.
Taxable profit
$88,000.00
Revenue after business expenses.
Total tax
$32,824.00
Income tax plus self-employment tax.
After-tax income
$55,176.00
Estimated amount left after tax.
Quarterly estimate
$8,206.00
Set aside this amount each quarter.
Effective tax rate
27.35%
Tax as a share of annual revenue.
Quick take
A quick read before you calculate
Use this calculator when you want a practical estimate of the tax you should keep aside from self-employed income.
Formula
Self-employed tax formula
Examples
2-3 real scenarios to make the result easier to trust.
FAQ
Clear answers to the questions people usually ask first.
Formula
Self-employed tax formula
Taxable profit = Revenue - Business expenses. Total tax = Income tax + Self-employment tax. After-tax income = Taxable profit - Total tax.
The quarterly estimate is a simple planning number, not a replacement for professional tax advice.
Examples
Lean operation
Annual revenue is $75,000, expenses are $18,000, income tax is 18%, and self-employment tax is 15.3%.
Total tax is about $17,964.
A cleaner expense base can make tax planning easier to read.
Higher-income month
Annual revenue is $180,000, expenses are $44,000, income tax is 24%, and self-employment tax is 15.3%.
Total tax rises sharply and should be reserved throughout the year.
The more you earn, the more important it is to reserve tax regularly instead of waiting until the deadline.
When to use
Use it when you want to check whether a month of freelance work is enough to cover both tax and personal income.
Common mistakes
- Treating all revenue as take-home pay.
- Forgetting to subtract business expenses before estimating tax.
- Ignoring the quarterly reserve and only planning at year-end.
FAQ
Is this a replacement for an accountant?
No. It is a planning tool that helps you estimate and reserve money more confidently.
Why is the effective tax rate lower than the sum of the rates?
Because the tax is measured against profit, and the effective rate is compared to total revenue.
Next step
Want bookkeeping to feel lighter?
QuickBooks or Xero can help you track income, expenses, and reserve amounts so tax planning stays organized.
Update your estimate whenever revenue or deductible costs change.