To write a check with attention to someone at an organization, put the organization’s legal name on the “Pay to the Order of” line and add the individual either after “c/o” on that same line or after “ATTN:” on the memo line. The payee line is the only part of the check that controls who can legally deposit it; everything else is routing guidance for the humans who open the envelope.
What to Gather First
Before you write anything, pull together three pieces of information: the organization’s exact legal name as it appears on the invoice or billing statement, the full name of the person you want the payment routed to, and a reference number tied to your account or transaction. That reference might be an invoice number, patient ID, case number, or account number.
The legal name matters most. Banks process checks by matching the payee name to an account on file, and if the match is loose, the bank can refuse the deposit. Copy the name straight from the invoice or statement rather than relying on a nickname, an abbreviation, or whatever is on the building sign.
How to Fill Out the Payee Line
Write the organization’s name first, then “c/o” (short for “care of”) followed by the individual’s name. For a payment to Dr. Sarah Chen at Sunshine Medical Group, the payee line reads:
Sunshine Medical Group c/o Dr. Sarah Chen
Under the Uniform Commercial Code, a payee can be identified by name, account number, or office, and the payee line determines who has authority to endorse the check.1LII / Legal Information Institute. UCC 3-110 – Identification of Person to Whom Instrument Is Payable The format above tells the bank the check is payable to the medical group while signaling internally that Dr. Chen should receive credit.
If you’d rather keep the individual’s name off the payee line entirely, write only the organization’s name there and put “ATTN: Dr. Sarah Chen” on the memo line. That’s the simpler route when you’re unsure whether an added name might slow down deposit.
Why Not to Use “And” Between the Names
Don’t write “Sunshine Medical Group and Dr. Sarah Chen” on the payee line. When two payees are connected by “and,” every named party must endorse the check before it can be deposited.1LII / Legal Information Institute. UCC 3-110 – Identification of Person to Whom Instrument Is Payable That means Dr. Chen’s signature plus an authorized company signature, which creates friction on both sides.
“Or” lets either party deposit independently, and when the phrasing is ambiguous, the UCC treats the check as payable alternatively, meaning either party can negotiate it.1LII / Legal Information Institute. UCC 3-110 – Identification of Person to Whom Instrument Is Payable Using “c/o” sidesteps the whole question.
Who Actually Deposits the Check
With “Organization c/o Individual,” the organization is the primary payee. Usually a bookkeeper, office manager, or accounts receivable clerk endorses and deposits it into the business account. The “c/o” is a delivery instruction, not a formal grant of endorsement authority.
That said, the UCC provides that when an instrument is payable to a person described as an agent or similar representative of a named person, either the representative or the represented entity can negotiate it.1LII / Legal Information Institute. UCC 3-110 – Identification of Person to Whom Instrument Is Payable Whether “c/o” qualifies as a representative designation depends on circumstances and the bank’s interpretation. If you want to make sure only the organization can deposit it, leave the individual’s name off the payee line and put it on the memo line or envelope instead.
Banks that accept a check with a forged or unauthorized endorsement are generally liable for the loss, which is why they look closely at ambiguous payee lines.2HelpWithMyBank.gov. My Bookkeeper Forged the Endorsement on Checks – What Can I Do If your own negligence contributed to a problem, liability can shift back to you, so it’s worth getting the payee line right the first time.
What Belongs on the Memo Line
The memo line doesn’t control who can cash or deposit the check. It’s a space for reference details that help the recipient route your payment internally. Write “ATTN:” followed by the person’s name and a reference number:
ATTN: Dr. Sarah Chen – Invoice #4892
In medical billing, that reference might be a patient ID. In legal billing, a case or matter number. Without it, a large organization can apply your payment to the wrong account and trigger automated collection notices even though you paid on time. Most payment-routing problems happen here, not on the payee line.
One warning: avoid writing “Payment in Full,” “Final Settlement,” or similar language on the memo line unless you genuinely intend to settle a disputed amount for less than what’s owed. Under the UCC’s accord-and-satisfaction rules, cashing a check bearing that language can extinguish the payee’s right to collect any remaining balance on the debt.
Addressing the Envelope
USPS addressing standards put the attention line above the organization’s name, not below it.3Postal Explorer. Publication 28 – Postal Addressing Standards – Section 214 Attention Line The format looks like this:
- ATTN JOHN DOE
- SUNSHINE MEDICAL GROUP
- 123 MAIN ST
- ANYTOWN US 12345
Automated sorting equipment reads addresses from the bottom up, so the delivery address and organization name are what matter for postal routing. The attention line at the top is for the recipient’s internal handling after delivery. Use a standard envelope rather than a window envelope, since a window can expose the payee line and reveal financial details in transit.
When Certified Mail Is Worth It
Regular First-Class Mail is fine for routine payments. Certified mail makes sense when the payment is large, when you’ve had delivery problems with this recipient before, or when you need proof the payment arrived by a specific deadline.
As of January 2026, USPS certified mail costs $5.30 per item on top of regular First-Class postage. A return receipt adds $4.40 for a physical card or $2.82 for an electronic version.4United States Postal Service. Domestic Extra Services and Fees – January 2026 Price Change Expect to spend roughly $10 to $11 total for certified mail with a physical return receipt, depending on envelope weight. The signed delivery record is useful if a payment dispute comes up later, especially for rent, legal fees, or medical bills where a missed payment triggers penalties or collections.