Interest on delayed refunds accrues from expiry of the three-month application period until refund at government-fixed rate. Section 11BB requires payment of interest on duties ordered to be refunded under section 11B(2) that are not refunded within three months of receipt of the section 11B(1) application; interest accrues from the day after that three month period until refund at a rate fixed by the Central Government (not below five per cent and not exceeding thirty per cent), includes a transitional proviso for applications predating the Finance Bill, 1995 assent, and deems appellate or court refund orders to be orders under section 11B(2) for interest purposes.