What is your business?
Is your business under audit?
One can provide interest free loan if they have so much capital but generally people pay interest just to claim expense and then take it back in cash.
There is no rate mentioned in income tax that needs to be paid.
If it's above 10000 don't pay in cash, if you are covered under audit.
If it stays with you for more than 3 years without any single payment and government comes to know about it they might treat it as your income and charge tax on same.
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