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Personal Finance · head to head

Affirm vs Airbase

Affirm logo

Affirm

Personal Finance

Buy now pay later app offering short interest-free plans and longer plans that charge real APR interest

From
Free
Rated
-
Full reviewWebsite
Airbase logo

Airbase

Accounting

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

From
$29/month
Rated
-
Full reviewWebsite

The short version

  • Only Affirm has a free tier, so it costs nothing to try first.
  • Each has a real cost: Affirm longer instalment plans carry real interest, up to roughly 36 percent APR depending on the retailer, item and applicant, which is a genuine borrowing cost that the buy now pay later framing can obscure for shoppers who do not read the terms shown before accepting.; 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.
  • They diverge on capability: Affirm covers Pay in 4, Airbase covers Corporate cards.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Affirm and Airbase actually diverge.

Attributes where Affirm and Airbase differ
AttributeAffirmAirbase
Starting priceFree$29/month
Pricing modelFree for short Pay in 4 plans; longer plans carry a disclosed APR up to roughly 36 percent, merchant pays a transaction feesubscription
Free tierYesNo
PlatformsiOS, Android, WebWeb, Ios, Android
CategoryPersonal FinanceAccounting
FoundedUnknown2017

Identical on both: user rating (Not yet rated).

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 Affirm

  • Pay in 4
  • Monthly instalment loans
  • Soft credit check
  • No late fees
  • Affirm Card
  • Pre-purchase terms disclosure

Only in Airbase

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

What people use each for

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

Affirm

  • A shopper financing a large purchase such as furniture or electronics who wants disclosed APR terms compared directly against a credit card before committingnot Airbase
  • Someone using the short Pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interestnot Airbase
  • A borrower who has missed a payment before and specifically wants a lender that does not charge late feesnot Airbase
  • A retailer offering point-of-sale financing to reduce cart abandonment on higher-ticket items, in exchange for paying Affirm a transaction feenot Airbase

Airbase

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

Where each one falls short

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

Affirm

  • Longer instalment plans carry real interest, up to roughly 36 percent APR depending on the retailer, item and applicant, which is a genuine borrowing cost that the buy now pay later framing can obscure for shoppers who do not read the terms shown before accepting.
  • Even with no late fees, Affirm reports many loans to credit bureaus, so a missed or late payment on a longer plan can affect a credit score in a way the marketing around interest-free short plans does not prepare shoppers for.
  • Approval and APR both vary by individual loan, so the same shopper can be offered interest-free terms on one purchase and a high APR on another, making the cost unpredictable until checkout.
  • Merchants pay a transaction fee to offer Affirm at checkout, a cost typically built into retail pricing, so shoppers who pay by other means still indirectly subsidise the option even if they never use it.
  • The Affirm Card blurs the line between buy now pay later and a general-purpose credit card, and using it for everyday spending on interest-bearing terms can compound borrowing cost in a way a single point-of-sale purchase would not.

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.

Pricing, plan by plan

Affirm

Free
  • Pay in 4Free
    • No interest if paid on time over six weeks
    • No late fees for a missed payment
    • Soft credit check at application
  • Monthly instalmentsFree
    • APR disclosed before the loan is accepted, up to roughly 36 percent depending on retailer and applicant
    • Terms from three to 36 months depending on purchase amount
    • Payment history can be reported to credit bureaus

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

Which should you pick?

Choose Affirm if

  • You need pay in 4.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want monthly instalment loans.
Affirm review

Choose Airbase if

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

Questions people ask

Is Affirm or Airbase better?
Neither clearly leads. Affirm starts at Free and Airbase at $29/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Affirm or Airbase?
Affirm has a free tier; the other does not. Paid plans start at Free for Affirm and $29/month for Airbase.
Does Affirm or Airbase run on more platforms?
Affirm runs on iOS, Android, Web. Airbase runs on Web, Ios, Android.
Can I use Affirm for free?
Yes. Affirm has a free tier, so you can try it without paying. Airbase starts at $29/month.
What is Affirm best used for?
Affirm is most often used for a shopper financing a large purchase such as furniture or electronics who wants disclosed apr terms compared directly against a credit card before committing, someone using the short pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interest, a borrower who has missed a payment before and specifically wants a lender that does not charge late fees, a retailer offering point-of-sale financing to reduce cart abandonment on higher-ticket items, in exchange for paying affirm a transaction fee. Of those, a shopper financing a large purchase such as furniture or electronics who wants disclosed apr terms compared directly against a credit card before committing and someone using the short pay in 4 plan for a smaller purchase who intends to pay it off within six weeks with no interest are not what Airbase is typically brought in for.
What can Affirm do that Airbase cannot?
Affirm covers Pay in 4, Monthly instalment loans, Soft credit check, No late fees. Airbase covers Corporate cards, Virtual cards per vendor, Bill payment, Expense reimbursement.

Answered from the vendors’ own pages

Affirm: Does Affirm always charge interest?

No, short Pay in 4 plans over six weeks are typically interest-free if paid on time; longer instalment plans of three to 36 months can carry a disclosed APR up to roughly 36 percent.

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.

Affirm: Does Affirm charge late fees?

No, Affirm does not charge late fees for a missed payment, unlike some buy now pay later competitors, but missed payments can still be reported to credit bureaus.

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.

Affirm: Will using Affirm affect my credit score?

The initial application uses a soft credit check that does not affect your score, but Affirm reports many resulting loans to credit bureaus, so payment history on the loan itself can affect your score.

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.

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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