Prak Khae is a free calculator, version 1, built by Ka Vatana, founder of CHNAI LAB. It gives an estimate, not
tax advice.
This is an estimate
The calculator works out tax on salary and NSSF contributions by the published rules, read on 1 October 2026.
It knows nothing about your allowances, benefits, overtime or special cases.
The final number is the one your employer or the General Department of Taxation works out. For your own case,
ask a tax professional.
Rules change
Tax rates, NSSF contributions and the exchange rate can change. The page shows the day its rules were read and
where.
The printed sheet
A sheet you print from this page is an estimate. It is not a payslip issued by an employer, and it must not be
used as proof of income.
Price
It is free to use. There are no accounts and no payments.
Liability
The calculator is provided as it is. Its maker is not liable for losses that come from decisions made on these
estimates alone.
Law
These terms follow the laws of the Kingdom of Cambodia.
Contact
If a number looks wrong, or you have a question: chnailab@gmail.com