Zoho Social
Spend management
Social media solution
Listed offer50% off
Mercury customers; see the source page for any additional vendor terms.
Expenses
Control spend and reimbursements.
13 spend management productsSoftware for expenses
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Rho
Business banking
Rho is a business banking and spend management platform offering corporate accounts, cards, and AP automation. Provides FDIC-insured accounts, same-day ACH, real-time spend controls, and accounting integrations — built for startups and scaling companies.
Listed offer$1,600 back with a $20,000 minimum balance for the first 60 days
Approved Stripe Atlas founders; vendor eligibility and compliance requirements may apply
Microsoft Advertising
Spend management
Search and native ads
Listed offerUp to $125 in credits
Mercury customers; New U.S. customers only
Lyft Airport
Spend management
A ride whenever you need one.
Listed offer10% off
Mercury customers; Must use your IO Mastercard
Instacart Business
Spend management
Order groceries for delivery or pickup
Listed offer2 month free
Mercury customers; Must use your IO Mastercard
Expensify
Spend management
Expensify is an expense management and corporate card platform that automates receipt scanning, expense reporting, approvals, and reimbursements. Used by 10M+ people worldwide to eliminate manual expense reporting and streamline business spending.
Availability needs review3 months free with Expensify for Startups
Available to new Expensify customers; early-stage startups
Ramp
Business banking
Ramp is a finance automation platform offering corporate cards, expense management, bill payments, and accounting integrations. Saves companies an average of 5% on total spending through AI-powered insights — used by 25,000+ businesses including Shopify and Anduril.
Listed offer$1,500 signup bonus
Approved Stripe Atlas founders; vendor eligibility and compliance requirements may apply
Brex
Business banking
Brex is a financial technology platform offering corporate cards, business banking, expense management, and bill pay — all built for startups and high-growth companies. Trusted by 1 in 3 Y Combinator companies, with no personal guarantee required.
Listed offerUp to $3,000 back based on qualifying deposits and card spend
Approved Stripe Atlas founders; vendor eligibility and compliance requirements may apply
Soho Friends
Spend management
Soho Friends is a travel and lifestyle program by Soho House. Join Soho Friends to stay in bedrooms across the globe at preferred rates with late checkouts and room upgrades.
Listed offer12 months free
Mercury customers; U.S.-issued small business Mastercard IO cardholders are eligible when a Soho Friends account is either activated for the first time or renewed with an eligible card during the offer period
ShopRunner
Spend management
E-commerce platform providing shipping, free returns, discounts, and seamless checkout
Availability needs reviewFree membership
Mercury customers; Requires enrollment
Mastercard Rental Insurance
Spend management
Rental car insurance
Listed offerFree membership
Mercury customers; The rental agreement must be for a rental period of no more than 31 consecutive days
Luminary
Spend management
Luminary's education and networking platform helps deliver the tools for you to run, manage and build your business.
Listed offer30% off
Mercury customers; Subscribe to an annual Luminary with your IO Mastercard