: A sequential number (also found in the top-right) for tracking and record-keeping.

: A box (often preceded by a dollar sign) for writing the payment amount in digits (e.g., $150.50).

These are the fields you manually fill out to authorize a payment:

: Located in the bottom-right; the check is only valid once signed by the account holder. Technical & Coded Information

: Marked "Pay to the order of"; identifies the individual or business authorized to receive the funds.

Pre-printed data allows financial institutions to route and process the payment automatically:

: The legal and official amount written out in words (e.g., "One hundred fifty and 50/100"). Banks prioritize this line if there is a discrepancy with the numerical box.