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Accounting · head to head

Airbase vs Mercury

Airbase logo

Airbase

Accounting

Spend management combining corporate cards, bill payment and expense claims, now part of Paylocity

From
$29/month
Rated
-
Full reviewWebsite
Mercury logo

Mercury

Accounting

Banking for startups

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Mercury has a free tier, so it costs nothing to try first.
  • Each has a real cost: Airbase card issuing and bill payment are built around United States entities and United States bank accounts, so a group with subsidiaries abroad keeps running local card and payment processes alongside and does not get the single ledger of spend that justified the purchase.; Mercury treasury access requires a $250,000 balance held with Mercury
  • They diverge on capability: Airbase covers Corporate cards, Mercury covers Business checking.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Airbase and Mercury actually diverge.

Attributes where Airbase and Mercury differ
AttributeAirbaseMercury
Starting price$29/monthFree
Pricing modelsubscriptionfreemium
Free tierNoYes
Founded20172019

Identical on both: platforms (Web, Ios, Android), user rating (Not yet rated), category (Accounting).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Airbase

  • Corporate cards
  • Virtual cards per vendor
  • Bill payment
  • Expense reimbursement
  • Unified approval policy
  • Purchase intake and procurement
  • Automated coding
  • Receipt collection

Only in Mercury

  • Business checking
  • Savings accounts
  • Virtual cards
  • Team management
  • API access
  • QuickBooks
  • Xero
  • Stripe

What people use each for

The jobs each tool is most often brought in to do.

Airbase

  • A company that has outgrown one shared company card and needs per person and per subscription cards with real limitsnot Mercury
  • A finance team where supplier invoices arrive in an inbox and approval is whoever replies, with no record afterwardsnot Mercury
  • A controller trying to close the month without rebuilding card and expense coding from statements every timenot Mercury
  • An organisation that wants spend approved before it is committed rather than discovered when the invoice arrivesnot Mercury

Mercury

  • Business banking and payments for startupsnot Airbase
  • Managing treasury, invoicing and corporate cards from one accountnot Airbase

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Airbase

  • Card issuing and bill payment are built around United States entities and United States bank accounts, so a group with subsidiaries abroad keeps running local card and payment processes alongside and does not get the single ledger of spend that justified the purchase.
  • The value depends on nearly all spend flowing through the platform, which makes partial adoption almost worthless and means the rollout is a change management exercise across every budget holder rather than a finance department deployment.
  • Paylocity's acquisition in 2024 reorients the roadmap towards a human capital management suite, so expense reimbursement is likely to be well served while procurement and the more finance specific features compete for attention with payroll and HR priorities.
  • Pricing combines a platform fee with tiering on features and users, and part of the economics rests on interchange rebates from card spend, so a company that puts most of its spend on transfers rather than cards pays the fee without earning the offset.
  • The general ledger sync is a mapping you own, so a chart of accounts change, a new department dimension or a ledger migration means reworking the coding rules, and a bad mapping quietly posts correct approvals to the wrong accounts.

Mercury

  • Treasury access requires a $250,000 balance held with Mercury
  • Non USD international wires carry a 1% conversion fee
  • Choosing OUR wire coding, which covers intermediary bank charges, costs $15 per wire
  • ACH invoicing is $1 per transaction on Mercury Plus and only free on the $299 a month Pro plan
  • Advanced and recurring invoicing require Mercury Plus at $29.90 a month

Pricing, plan by plan

Airbase

$29/month
  • StandardFree
    • Corporate cards
    • Expense reports
    • Bill pay
  • Premium$10/month
    • Advanced approvals
    • NetSuite sync
    • Procurement
  • Enterprise$undefined/month
    • Custom workflows
    • API access
    • Dedicated support

Mercury

Free
  • Mercury (Free)Free
    • ACH payments
    • Domestic wires
    • Real-time payments
  • Mercury Plus$29.9/month
    • Invoice ACH debits
    • Recurring invoices
    • Invoicing API (500/month)
  • Mercury Pro$299/month
    • All Plus features
    • Relationship manager
    • Free ACH invoice debits

Which should you pick?

Choose Airbase if

  • You need corporate cards.
  • You work on Web, Ios, Android.
  • You also want virtual cards per vendor.
Airbase review

Choose Mercury if

  • You need business checking.
  • You want to start without paying.
  • You work on Web, Ios, Android.
  • You also want savings accounts.
Mercury review

Questions people ask

Is Airbase or Mercury better?
Neither clearly leads. Airbase starts at $29/month and Mercury at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Airbase or Mercury?
Mercury has a free tier; the other does not. Paid plans start at $29/month for Airbase and Free for Mercury.
Does Airbase or Mercury run on more platforms?
Both run on Web, Ios, Android, so platform support will not decide this one for you.
Can I use Mercury for free?
Yes. Mercury has a free tier, so you can try it without paying. Airbase starts at $29/month.
What is Airbase best used for?
Airbase is most often used for a company that has outgrown one shared company card and needs per person and per subscription cards with real limits, a finance team where supplier invoices arrive in an inbox and approval is whoever replies, with no record afterwards, a controller trying to close the month without rebuilding card and expense coding from statements every time, an organisation that wants spend approved before it is committed rather than discovered when the invoice arrives. Of those, a company that has outgrown one shared company card and needs per person and per subscription cards with real limits and a finance team where supplier invoices arrive in an inbox and approval is whoever replies, with no record afterwards are not what Mercury is typically brought in for.
What can Airbase do that Mercury cannot?
Airbase covers Corporate cards, Virtual cards per vendor, Bill payment, Expense reimbursement. Mercury covers Business checking, Savings accounts, Virtual cards, Team management.

Answered from the vendors’ own pages

Airbase: Does it work for companies outside the United States?

Partially. Some international spend and reimbursement is supported, but card issuing and the payment rails are strongest for United States entities. Confirm coverage for each country you operate in before assuming it replaces local processes.

Mercury: Is Mercury business banking free?

Mercury's base banking tier is free and includes ACH payments, domestic wire transfers, real-time payments, Bill Pay, and QuickBooks/Xero automations at no monthly cost.

Source
Airbase: Does Airbase replace our accounting system?

No. It manages spend and pushes coded transactions into the ledger. QuickBooks, NetSuite or whatever else you use stays.

Mercury: What does Mercury Plus add beyond the free tier?

Mercury Plus costs $29.90 per month and adds invoice ACH debits, recurring invoice capabilities, invoicing API with 500 calls per month, unlimited 1099 filings, and access to partner benefits.

Source
Airbase: What changed after the Paylocity acquisition?

Ownership and roadmap direction. The product continues, now positioned alongside Paylocity's payroll and HR products. If procurement is your main reason to buy, ask directly about investment in that module.

Mercury: Does Mercury charge monthly account fees?

No, Mercury states there are no minimum account balance requirements, overdraft fees, required monthly fees, or account opening fees. The free tier includes essential business banking, with paid tiers available for additional features.

Source
Airbase: How is it priced?

A platform subscription with tiers, plus usage and user dimensions, partly offset by rebates on card spend. Because the rebate depends on card volume, model your own mix of card versus transfer spend before accepting a payback figure.

Airbase: Can we use it for accounts payable only?

You can, but the approval consistency argument weakens considerably. Most of the reported benefit comes from cards, bills and reimbursements sharing one policy and one coding process.

Airbase: Will our auditors accept the approval records?

The per transaction record of approver, receipt and coding is generally what auditors want to see for spend testing. Agree the sampling approach with them early, particularly around any spend that still happens outside the platform.

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