Mercury

Mercury · Corporate card

Mercury IO Card review

USUpdated October 2026

The Mercury IO card pays 1.5% cashback on all spend, for businesses that bank with Mercury. There’s no personal guarantee and no credit check when you sign up, and Mercury’s base plan costs $0 a month.

Cashback1.5%On all spend
Personal guaranteeNot requiredNo credit check at sign-up
Base plan$0Monthly
Available inUSCorporate card
Treasi’s take

Who Mercury is best for

Choose Mercury if…

Startups banking with Mercury, companies wanting flat 1.5% cashback and founders avoiding personal guarantees.

Look elsewhere if…

Businesses that want to keep their current bank.

The Mercury IO card pays 1.5% cashback on all spend, for businesses that bank with Mercury. There’s no personal guarantee and no credit check when you sign up, and Mercury’s base plan costs $0 a month.

Because it’s tied to a Mercury business account, it’s simplest if you already bank there or plan to. Mercury is rated 4.9 on Capterra from 58 reviews.

Details

Fees, features and eligibility

Rewards1.5% on all spend
Annual fee$0
Fees$0 (base plan)
Card typeCorporate card
EligibilityMercury business account required
Personal guaranteeNot required
CurrenciesUSD

Source: Mercury published product information.

Pros and cons

What stands out

Pros

  • 1.5% cashback on all spend
  • No personal guarantee
  • $0 base plan

Cons

  • Requires a Mercury business account
FAQs

Mercury: common questions

How much cashback does the Mercury IO card pay?

1.5% on all spend.

Does Mercury require a personal guarantee?

No, and there’s no credit check at sign-up.

Do I need a Mercury account for the IO card?

Yes. The IO card is for businesses with a Mercury business account.

What does Mercury cost?

The base plan is $0 a month.

Used Mercury? Help other businesses choose.

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