About Randwise

Randwise offers free, quick calculators for everyday South African money questions. You don't need to sign up, and we don't sell you anything.

Methods and tax-year coverage

Income-tax and retirement-annuity estimates currently use historical SARS 2025/26 tables (1 March 2025–28 February 2026), not later tax years. We label this coverage on the relevant calculators. Home-loan and vehicle-finance results use amortising-loan calculations at the rate you enter; those rates are not live bank quotes.

Each calculator includes a worked example, its method and limitations, and links to relevant official guidance. All results are estimates, not financial advice, credit approval or an official SARS assessment. Check with SARS, your payroll team, lender or a registered adviser before making decisions.