Capital One written dispute & complaint mailing address
To send Capital One a written dispute or complaint by mail, use Capital One, Attn: Disputes, PO Box 30279, Salt Lake City, UT 84130-0279. Disputing a billing error on a Capital One credit card in writing — the address Capital One publishes on its own Billing Rights page for every consumer card. This is not a payment address — don't mail a payment here. Include your account number and a clear description of the issue, and keep a copy for your records.
Capital One — Billing disputes
Capital One Attn: Disputes PO Box 30279 Salt Lake City UT 84130-0279
Disputing a billing error on a Capital One credit card in writing — the address Capital One publishes on its own Billing Rights page for every consumer card.
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Capital OneAttn: DisputesPO Box 30279Salt Lake City, UT 84130-0279
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Key facts
- This address is for written disputes and complaints — not for sending a payment.
- Capital One is a credit card issuer and bank.
- Under the Fair Credit Billing Act (FCBA), send your written dispute within 60 days of the first statement showing the error. A dispute mailed to any other address may not trigger your FCBA rights, even if Capital One eventually receives it.
- Include your account number, a clear description of the issue, and any supporting documents.
- PostPal prints your letter and mails it for you — no printer, envelope, stamps, or post office trip.
How to send your letter
- 1
Write your letter
State your full name and account number, the transaction or issue you're disputing (with the dollar amount, if it's a billing error), and what you'd like Capital One to do. Keep a copy for your records.
- 2
Attach supporting documents
Include copies (not originals) of anything that supports your case — a receipt, a merchant email, a statement excerpt, or a prior response from Capital One.
- 3
Address it to Capital One
Address it exactly as shown above: Capital One, Attn: Disputes, PO Box 30279, Salt Lake City UT 84130-0279.
- 4
Send it with PostPal
Write or upload your letter to PostPal with the address above prefilled. We print it, add your return address, and mail it for you — no printer, envelope, stamps, or trip to the post office.
Common questions
What is Capital One's address for a written dispute or complaint?
Capital One, Attn: Disputes, PO Box 30279, Salt Lake City, UT 84130-0279. Disputing a billing error on a Capital One credit card in writing — the address Capital One publishes on its own Billing Rights page for every consumer card. Confirm it on Capital One's official site before anything time-sensitive — issuers do update these addresses.
Can I send a payment to this address?
No. This is a written-correspondence address for disputes and complaints, not a payment address. Capital One's payment address is different and is usually printed on your own statement or card — mailing a payment here risks delay or misapplied funds.
What happens after I send my letter?
Under the Fair Credit Billing Act (FCBA), send your written dispute within 60 days of the first statement showing the error. A dispute mailed to any other address may not trigger your FCBA rights, even if Capital One eventually receives it.
What should I include in the letter?
Your full name, account number, a clear description of the issue (with the date and amount, if it's a transaction), and what outcome you're asking for. Copies of any supporting documents strengthen your case.
How do I mail this without a printer?
Write or upload your letter to PostPal with the address prefilled. We print it, add your return address, and mail it for you — no printer, stamps, or post office trip needed.
Sources
Addresses verified September 2026 against official sources. Always confirm on the official site before time-sensitive filings.