Buyer guide
AP automation for small business
A source-cited comparison of free plans, entry pricing, and free trials across 8 researched vendors — the dimensions that matter most for small-business budgets.
Page reviewed September 30, 2026. Claim-level verification dates appear beside each sourced fact.
What is the best AP automation for a small business?
Start with entry cost. Ramp and Melio publish free plans; BILL and Tipalti publish paid starting prices; and Yooz publishes a free trial. Stampli, AvidXchange, Yooz, and Corpay publish no starting price. A free plan can still carry per-payment fees, so read the transaction-fee row on each vendor profile, then put your numbers into the AP automation cost calculator.
For a small business, the entry cost and whether a free plan or trial exists usually matters more than enterprise features like multi-entity consolidation. Ramp and Melio both publish free plans; Yooz publishes a 15-day free trial.
Sourced comparison
| Dimension | BILL | Ramp | Tipalti | Stampli | Melio | AvidXchange | Yooz | Corpay |
|---|---|---|---|---|---|---|---|---|
| Free plan | UNKNOWN — not independently verified | Free plan with $0/mo/user available source, verified 2026-09-07 | No free plan/tier source, verified 2026-09-07 | UNKNOWN — not independently verified | Free plan available (one user; 5 free ACH payments per month) source, verified 2026-10-24 | UNKNOWN — not independently verified | No free plan (only a 15-day free trial) source, verified 2026-09-07 | UNKNOWN — not independently verified |
| Free trial | Free trial available in most cases (duration not published) source, verified 2026-09-07 | UNKNOWN — not independently verified | UNKNOWN — not independently verified | UNKNOWN — not independently verified | UNKNOWN — not independently verified | UNKNOWN — not independently verified | Free for 15 days, no commitment source, verified 2026-09-07 | UNKNOWN — not independently verified |
| Starting price | $49 per user/month (Essentials plan) source, verified 2026-09-07 | $0/mo/user (Free plan) source, verified 2026-10-24 | Accounts Payable product starts at $99/month; Mass Payments starts at $249/month source, verified 2026-09-07 | UNKNOWN — not independently verified | $0 (Free plan, limited to one user) source, verified 2026-10-24 | UNKNOWN — not independently verified | UNKNOWN — not independently verified | UNKNOWN — not independently verified |
Frequently asked questions
Is there free AP automation software for small businesses?
Ramp and Melio publish free plans. Ramp: Free plan with $0/mo/user available. Melio: Free plan available (one user; 5 free ACH payments per month).
How do I know whether AP automation is worth it for a small business?
Put a number on your current process first. The cost per invoice calculator uses your staff time, labor cost, and invoice volume, and the ROI calculator compares that with a candidate product's fees.
Use a comparable evaluation brief
Document accounting system, invoice volume, entity and currency needs, PO matching, approvals, OCR, payments, vendor onboarding, company size, and implementation budget.
Related guides
- AP automation pricing
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- Invoice automation for Xero
- Ramp vs BILL
- Best AP automation software compared