Our verdict: The Mercury Mastercard is invitation-only: applying requires a pre-approved offer with a reservation code that arrives in the mail. For those who received one, the card can be a reasonable mid-tier rebuilding option; the sample terms Mercury publishes show no annual fee on its Visa Signature product. Without an invitation there is no application link to find, and the practical step is a card that accepts open applications.
Looking for your account? Cardholder login is at mercurycards.com; this page is our independent review.
| How to get it | Mailed pre-approved offer with reservation code only — no open application |
|---|---|
| Annual fee | Mastercard: not published (offer-specific). Sample Visa Signature agreement: $0 |
| Purchase APR | Sample Visa Signature agreement (terms as of 06/30/2026): 25.99%–35.99% |
| Monthly fees | None appear in the published sample agreement |
| Deposit | None (unsecured, “$0 security deposit”) |
| Reports to | Not stated — their agreement says only that they “may report” to credit bureaus |
| Issuer | First Bank & Trust (Brookings, SD); program operated by Mercury Financial |
Terms verified August 25, 2026 against Mercury’s own site and FAQ and their published sample Cardmember Agreement. Because Mercury is offer-based, your mailed terms are the only terms that matter: read that Schumer box, not this table.
What “invitation-only” means in practice
Mercury pre-screens through the credit bureaus and mails offers to people in the credit band they want, typically rebuilders in the middle of the range rather than deep subprime. Their FAQ: “You can only apply if you have been pre-approved and received an offer/reservation code from us.” Lost the mailer? There’s a reservation-code lookup on their site. Note also their own disclosure about the application: unlike Milestone and Indigo, Mercury says applying will involve a credit impact (“Applying for any credit card can affect your credit”).
How to read the offer you got
Because pricing is offer-specific, the mailed Schumer box is the controlling document. Three checks:
- Annual fee: the sample agreement Mercury publishes shows $0. If your offer carries a fee, that indicates the tier they placed you in; review the rest of the terms with that in mind.
- APR: the published sample runs 25.99%–35.99%. At any rate in that range, avoid carrying a balance; the card interest calculator makes the cost concrete.
- Bureau reporting: Mercury’s agreement only says they may report. All-three-bureau reporting is the purpose of a rebuilding card, so ask before accepting; a card that does not reliably report does not serve that purpose. OpenSky and Capital One state their reporting explicitly.
No invitation? Comparable cards with open applications
- No credit check, $0 annual fee: OpenSky Plus review
- $0 fee with underwriting and the best graduation path: Capital One Platinum Secured review
- No deposit possible at all: the fee math on Milestone/Indigo is laid out in the Milestone card review
Full category rankings: unsecured cards for bad credit.
Mercury’s CFPB complaint record
In the CFPB’s complaint database, Mercury Financial Intermediate LLC drew 181 complaints in the 12 months ending August 26, 2026 — a modest count, though Mercury’s invitation-only model also means a smaller customer base than open-application issuers. The leading issues: “Fees or interest” (48), followed by “Incorrect information on your report” (29) and “Problem with a purchase shown on your statement” (23). If you accept a mailed offer, those are the issues to monitor.
Methodology: raw counts from the CFPB Consumer Complaint Database; figures refresh automatically each week. Counts aren’t rates — the CFPB publishes no customer-base denominator, so totals aren’t comparable across issuers of different sizes.
Frequently asked questions
Can I apply for a Mercury credit card without an invitation?
No. Mercury’s own FAQ says applications require a pre-approved offer and reservation code, mailed based on credit bureau pre-screening. There is no open application.
Who issues the Mercury Mastercard?
First Bank & Trust of Brookings, South Dakota, with the program operated by Mercury Financial — per the site’s own footer and cardmember agreement.
Is the Mercury card good for rebuilding credit?
Potentially. It’s unsecured with no deposit, and the published sample shows no annual fee. Confirm bureau reporting and your specific APR from the mailed offer before accepting; those two facts determine whether it works as a rebuilding tool.