Money and finance

Currency

$100 + $50 // $150.00
10 dollars // $10.00

Symbols and words are both recognised. Conversion between currencies reaches the network and resolves asynchronously. See async and live data.

Expression	Result
10 USD in GBP	converted at the current rate
100 euros to dollars	the same, in words

Tax

tax on 100 at 20% // 20
100 + 20% // 120
tax off 120 at 20% // 100
tax in 120 at 20% // 20

tax on gives the tax, not the bill. The bill is 100 + 20%, which reads as a twenty percent increase. Going the other way, tax off takes a tax-inclusive total back to the pre-tax amount and tax in (also tax of, tax from) pulls out the tax already inside it. vat is accepted everywhere tax is.

No tax rate is ever assumed. You state it, because the correct rate depends on where you are and what you are buying.

Interest and inflation

Expression	Result
interest on 1000 at 5% over 3 years	simple interest
monthly repayment on 200000 at 4% over 25 years	a mortgage payment
what is $100 from 1990	adjusted using a bundled price index

The inflation figures come from a bundled consumer price index and are an approximation, not a substitute for a real financial calculation.