Interest for failure to deduct or collect tax accrues in distinct monthly periods with higher rate after deduction until payment.

Persons required to deduct or collect tax who fail to deduct, collect or pay the tax become liable for simple interest. Interest is computed in two periods: from the date tax was deductible or collectable to the date it is deducted or collected, and from the date it was deducted or collected to the date it is paid, with a lower monthly rate for the first period and a higher monthly rate for the second period.

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