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Calculate interest on late provisional tax payment

Posted 28 September 2015

SARS charges interest on late payments made toward provisional tax deadlines.

To calculate this late payment penalty, use the formula below:

Provisional tax amount x 10.25% x (days after deadline / 365)


Use the calculator below:



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Get FREE Help with your Tax Return today from



TaxTim's award-winning tax return services are now free to all Momentum policyholders and Multiply clients:

 Do Your Tax Return Easily
 Avoid penalties
 Maximise your refund

Get started