Estimate your quarterly tax payments as a mystery shopper. Factor in mileage deductions and other expenses to see what you should set aside.
Why Mystery Shoppers Pay Quarterly Taxes
As a mystery shopper, you’re an independent contractor. That means no employer withholds taxes from your payments. The IRS expects you to pay as you earn, not in one lump sum in April.
Most mystery shoppers owe two types of tax: regular income tax and self-employment tax. The self-employment tax (15.3%) covers Social Security and Medicare — the same taxes employees pay, but you’re responsible for both the employee and employer portions.
Quarterly payments prevent a nasty surprise in April. They also help you avoid underpayment penalties.
Disclaimer: This calculator provides estimates only. It is not tax advice. Your actual tax depends on your complete financial picture. Consult a tax professional for personalized guidance.
📋 Quarterly Tax Estimator
Estimate your quarterly tax payment based on your mystery shopping income.
This Quarter’s Income
Your Estimated Quarterly Tax
💡 Set Aside Each Month
Transfer this amount to savings after each payment to stay on track.
* This is an estimate only. Does not include state income tax. Your actual tax depends on your complete financial picture.
How to Use This Calculator
Enter your mystery shopping income and expenses for one quarter (three months). The calculator estimates what you should pay the IRS.
- Quarterly gross income — Add up all mystery shopping payments for the quarter (before any deductions).
- Quarterly mileage — Total miles driven for shops. The IRS rate for 2026 is $0.725/mile.
- Other expenses — Phone, supplies, parking fees, and other business costs.
- Filing status — Your tax filing status affects your income tax bracket.
- Total annual income — Include all sources (W-2 job, mystery shopping, other gigs) to estimate your bracket.
Smart move: Open a separate savings account for taxes. Transfer the suggested amount after every mystery shopping payment.
When Quarterly Payments Are Due
The IRS has four payment deadlines each year.
- Q1 (January - March): April 15
- Q2 (April - May): June 15
- Q3 (June - August): September 15
- Q4 (September - December): January 15 (next year)
Mark these dates on your calendar. Missing a payment means potential penalties.
How to Actually Pay
IRS Direct Pay
Go to irs.gov/payments. Select "Estimated Tax" and the quarter. Pay directly from your bank account. It's free and takes about five minutes.
EFTPS
The Electronic Federal Tax Payment System at eftps.gov lets you schedule payments in advance. You'll need to set up an account first.
Don't Forget State Taxes
Most states have income tax too. Check your state's website for estimated payment rules.
Want the Complete Tax Guide?
Learn about deductions, record-keeping, and how to avoid common tax mistakes.
Read the Full Guide