Website information
Editorial and Corrections Policy
99Tools provides transparent information for visitors.
Accuracy process
Each page should state its purpose, inputs, formula and limitations. South African rates or rules are checked against appropriate official sources when they affect a calculation.
Updates
Review dates are shown on calculator and guide pages. Pages should be reviewed after official rate, tax, university or regulatory changes. A displayed date does not replace confirmation with the official source.
Corrections
Reported errors are checked against the page logic and available authoritative information. Confirmed errors should be corrected promptly, and material changes should update the page review date.