Free tool

SUI penalty and interest calculator

Choose the state, enter the unpaid amount and how many days late it is. See the penalty, the interest and the total.

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The late payment.

Choose the state and enter the amount and the days late. The penalty, the interest and the total show here.

A penalty on the unpaid amount.
When SUI contributions are underpaid, from a rate error, a missed payment or a payroll discrepancy, the agency assesses a one-time percentage penalty on the principal.
Interest for each month late.
Interest accrues monthly from the due date. A flat penalty plus interest for every month means a small underpayment grows if it is left alone.
Each state sets its own rates.
The calculator uses a state's published penalty and interest rates where Kreto has a cited source, and a general default rate otherwise. The result says which.

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Try the free notice scan: upload a text-based notice PDF and see its type, agency, deadline and a suggested next step. No account.