Image of the IO card at an angle with IO logo line drawing in the background

Get growing with the IO credit card

Unlock unlimited cashback, higher credit limits, and spend management tools. Exclusively for Mercury account holders.
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You must have an account with Mercury and meet deposit minimums to become eligible for IO.

Engineered for the startup journey

1.5% cashback on all spend

Easy and straightforward rewards

Higher credit limits for startups

Harness more spending power

Low cash balance minimum

Qualify with a $25K balance

Instant virtual cards for your team

Start spending immediately

Spend management tools

Maintain control as you scale

Simplify your finances

Consolidated banking and cards

Scale confidently with powerful spend management tools

Physical IO card with virtual cards in the background

Cards for your team

Issue as many cards as you need to your team — individually or in bulk with our Google Workspaces integration.

Accelerate your growth with the IO Mastercard

Increase cash flow with automatic cashback

  • Unlimited 1.5% cashback on all spend
  • Automatically deposited into your account
  • No confusing points system
  • No manual redemption
IO credit card highlighting 1.5% cashback

Start spending at startup speed

  • Qualify for IO with an industry-low $25K cash balance minimum
  • Get higher credit limits through our startup-friendly underwriting model
  • Start spending immediately with virtual cards
Bar chart showing IO credit limit higher than traditional banks

Get time back with built-in finance automations

  • Close the books faster with QuickBooks and Xero integrations
  • Ditch data entry with transaction categorization syncing
  • Generate NetSuite-friendly reports

There’s more to IO

  • No interest or annual fees
  • Mastercard Zero Liability and Fraud Protection
  • Discounts on tools like Microsoft and Adobe
  • Can help improve your business credit score
  • Support when you need it via chat or email

Just one part of Mercury’s full financial platform

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Explore Demo
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Bank accounts

Checking and savings accounts with up to $5M in FDIC insurance through our partner banks and their sweep networks.

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Treasury

Earn yield on idle cash right alongside your operating accounts.

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SAFEs

Easily create and manage SAFEs right inside Mercury, plus potentially save money on legal fees.

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Mercury Raise

Connect with investors, founders, and experts via our startup success platform.

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Venture debt

Supercharge your growth and extend your runway with Mercury Venture Debt.

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Startup perks

Get discounts on hundreds of popular tools, including AWS and Google Cloud.

If you have questions, we have answers

See all FAQs

Start by signing up for a Mercury account. You will need to deposit up to $25K into your account to become eligible for IO. You will need to maintain an average cash balance roughly equal to $25K in your Mercury account to keep your credit account active.

We do not run a credit check during the IO sign-up process, so your personal credit score will not be considered or affected.

If you are a current Mercury account holder, go to the Credit Card section in your Mercury dashboard to find out if you are eligible for IO.

When you spend with IO, you’ll earn unlimited 1.5% cashback on every purchase. You can use IO anywhere that accepts Mastercard credit cards. Your cashback will be automatically deposited into your account at the end of each month.

Mercury has a startup-friendly underwriting model — we understand that our customers may be newly incorporated, retain low cash balances, and have limited credit or banking history. Because all IO customers hold cash within Mercury, we can more accurately understand your financial position, and offer a higher credit limit than what is typically offered to startups by traditional banks.

Your credit limit will be determined by your Mercury account balance. Your limit might increase as your Mercury balance increases, but your credit limit may also decrease. Currently, we reassess your business limit following large withdrawals and deposits.

Like most business credit cards on the market, IO is a charge card, which means that you will need to pay off your full IO balance every pay period. Your pay period may be daily or monthly, depending on the average cash balance in your Mercury account. We’ll automatically deduct your full balance from your chosen Mercury account on a date of your choosing. You can also pay off your card early at any time.

We don’t charge annual fees on IO cards, and because you’ll pay off your IO card automatically each month, you won’t incur any interest. However, we do charge an international transaction fee on non-USD IO card transactions. Customers have the option to select a paid Mercury plan (starting at $35/month). IO card features are free to use, though if you want to use our enriched NetSuite accounting automations to sync your IO card transactions to NetSuite, you’ll have to upgrade to a paid plan. QuickBooks and Xero enriched automations, as well as the ability to import bank feed connections across QuickBooks, Xero, and NetSuite, are free. Learn more about pricing.

IO has a suite of expense management features to help you scale your team and grow your business, with confidence and control.
  • Issue physical or virtual cards to your team, either individually or in bulk with our Google Workspaces integration.
  • Grant card-only access to team members to control who can view your account details.
  • Set custom daily, weekly, or monthly spend limits for individual team members, as well as custom card expiration dates.
  • Create cards locked to specific merchants (from our list of over 1,000 merchants) with custom spend limits on those merchants, or enable company-wide merchant and category restrictions.
  • Set up company-wide spend policies requiring employees to upload receipts or add notes for card transactions above a specified amount.
  • View your company's debit and credit card subscriptions in one place, and get notified about new or duplicate subscriptions.

Yes, using IO may help your company establish a strong credit history and improve your business credit score. Mercury reports IO payment history to Equifax and Dun & Bradstreet, two of the three major business credit bureaus. Reporting your IO payments can help your company establish a strong credit history, improve your credit score, and open doors to more opportunities for growth and financing.

Ready, set, grow

Start spending – and growing – with credit cards available to Mercury account holders.
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Disclaimers and footnotes

    Mercury is a fintech company, not an FDIC-insured bank. Banking services provided by Choice Financial Group, Column N.A., and Evolve Bank & Trust, Members FDIC. Deposit insurance covers the failure of an insured bank.