Deposit Account Monthly Statement

Idiomatic rebuild of the COBOL ACCT-STMT program — tiered interest, maintenance fees with waivers, and overdraft handling. Runs entirely in your browser.

Any value other than 1/2/3 maps to UNKNOWN (no rate, no fee).
Field width is 7 digits (PIC 9(7)); larger values wrap modulo 10,000,000.
Field width is 3 digits (PIC 9(3)).
Enter values and press Calculate.