How to write a check (and read one)

Writing a check feels like a skill from another century until the day a landlord, a contractor, or a government office accepts nothing else. It's a simple instrument — a written order telling your bank to pay a specific person a specific amount from your account — but filling one out wrong can bounce it, delay it, or expose you to fraud. Ten minutes of understanding covers a lifetime of occasional check-writing, plus the more useful skill of reading the numbers printed along the bottom.

The six parts of a check you fill in

1. Date: today's date, top right. Post-dating (a future date) doesn't reliably stop a bank from cashing it early.
2. Pay to the order of: the exact name of the person or business receiving the money. Precision matters — 'Cash' makes the check payable to anyone holding it.
3. Amount in numbers: the dollar amount in the box, written close to the dollar sign so nothing can be inserted (e.g., '1,250.00').
4. Amount in words: the same amount spelled out on the line, with cents as a fraction ('One thousand two hundred fifty and 00/100'). If the words and numbers disagree, the words legally win.
5. Memo: optional, bottom left — a note like 'March rent' or an account number the payee asked for.
6. Signature: bottom right. An unsigned check is not valid; this is the authorization.

Reading the numbers on the bottom

The string of digits along the bottom edge, printed in that blocky font, is the MICR line, and it holds three pieces of information every time you set up direct deposit or autopay. The first nine-digit number is the routing number, identifying your bank. The next number is your account number. The last is the check number, matching the one in the corner. Anyone asking for your 'routing and account number' is asking for the first two — which is why a blank or discarded check is sensitive: those numbers let someone set up ACH debits.

Handling checks safely

• Use permanent ink, never pencil — pencil can be erased and rewritten.
• Fill every field completely and draw a line through empty space after the written amount so nothing can be added.
• Record each check in a register or app so you don't forget the money is committed before it clears.
• Void mistakes by writing 'VOID' large across the check rather than tossing a partly-written one.
• Store your checkbook securely and shred old checks — the account and routing numbers are all a fraudster needs to attempt an ACH pull.

The bottom line

A check is a signed order to pay, and the only skills it requires are filling in six fields precisely — with the written amount as the legal tiebreaker — and keeping the account numbers on the bottom private. Use ink, name the payee exactly, record what you write, and never leave a check payable to 'Cash' where it can be lost. Paper is specialized now, not dead, and the specialization rewards anyone who knows how to handle it.