01
Calculate Total
Start with the price and Tax Rate to see the final amount instantly.
Built for iPhone and iPad
Tax math,
made simple.
Enter what you know. SimpleTax instantly calculates Before Tax, Tax Rate, Tax Amount, or Total—clearly and precisely.
No account No cloud No app tracking
3 ways
Calculate the value you need
On-device
Your calculations stay yours
iPhone + iPad
One focused experience
Less tapping. More clarity.
The right answer, whichever number you start with.
Switch the calculated field in a tap. SimpleTax keeps Before Tax, Tax Rate, Tax Amount, and Total consistent as you work.
02
Find Before Tax
Work backwards from the Total when the pre-tax price is missing.
03
Solve for Tax
Let SimpleTax calculate the Tax Amount while every value stays visible.
Precise by default
Currency-aware rounding that adds up.
Choose your currency, then let SimpleTax apply its precision and rounding increment—down to CHF 0.05.
USDEURCHFJPYKWDand more
Make it yours
Feels at home on your device.
Choose from 15 themes in light or dark appearance, follow your system appearance, and use light haptic feedback while entering values.
- Light, dark, or system appearance
- 15 themes, including Ocean, Sage, and Plum
- Optional currency-specific rounding
- VoiceOver, Dynamic Type, and Reduce Motion support
Made for the big screen, too
More room. Same simplicity.
SimpleTax adapts to iPad without adding clutter, so every number stays easy to scan and edit.
Private by design
Your numbers never need to leave your device.
SimpleTax has no account, backend, telemetry, or sync. Your latest calculation and preferences are stored locally so you can pick up where you left off.
Read the Privacy Policy
Know the number. Move on.
A focused Tax calculator for shopping, invoicing, budgeting, and every quick check in between.