BILL is the best accounts payable software for most small and midsize businesses in 2026, and Melio is the best pick for a small business on a budget. BILL gives finance teams mature approval and payment workflows, while Melio lets owners pay bills from a free plan.
The other picks fit specific situations. Ramp Bill Pay suits companies that want AP and corporate cards in one free tool. Tipalti handles payments to vendors in many countries. Stampli fits teams whose invoices need input from several people, and AvidXchange serves midsize companies in industries such as real estate and construction.
Look past the subscription price. Per-payment fees for checks, same-day ACH, wires, and card payments can cost more than the software each month, so estimate your payment mix before you compare tools.
Our top pick
BILL
Mature approval and payment workflows that grow from owner to finance team.
Quick picks
Best overall
Best free AP tool
Best on a budget
Best for global payments
Best for invoice collaboration
How we ranked these tools
We scored each tool on five criteria: fit for accounts payable teams, depth of invoice capture, approval, and payment features, pricing and value including payment fees, ease of use, and support. We based the scores on vendor documentation, published pricing, and public user reviews. We did not accept payment for placement. Prices reflect published rates as of October 2026, so confirm the current price with the vendor.
The 6 best accounts payable software tools
1. BILL
Best for most small and midsize businesses
Our rating4.7 / 5
Starting price$49 / user / month
Free planFree trial
BILL automates the full payables cycle: it captures invoices, routes them for approval, pays vendors, and syncs with your accounting system. AP and AR plans cost $49 per user per month for Essentials, $65 for Team, and $89 for Corporate, with Enterprise priced on request. A free trial is available in most cases. BILL also offers Spend and Expense at no cost. Per-user pricing gets expensive when many approvers need logins, and checks and wires carry extra fees.
Pros
- Mature approval workflows
- Syncs with major accounting systems
- Free Spend and Expense product
Cons
- Per-user pricing adds up with many approvers
- Transaction fees on several payment types
Key features
- Invoice capture
- Approval routing
- ACH, check, and card payments
- Accounting sync
2. Ramp Bill Pay
Best for companies that want free AP with corporate cards
Our rating4.6 / 5
Starting price$15 / user / month
Free planYes
Ramp Bill Pay is part of Ramp’s spend platform, and it runs on Ramp’s free plan with no software or transaction fees for standard use. The free tier includes invoice capture, check, ACH, card, and wire payments, approval rules, and QuickBooks Online and Xero sync. Ramp Plus starts at $15 per user per month plus a platform fee and adds batch payments and two- and three-way matching. Same-day ACH and international payments can carry fees without a Ramp business account.
Pros
- Capable free plan
- AP and corporate cards in one tool
- PO matching on Plus
Cons
- Some ERP integrations require Plus
- Platform fee on Plus is not listed up front
Key features
- AI invoice capture
- Approval rules
- Vendor onboarding
- Two- and three-way matching
3. Melio
Best for small businesses on a budget
Our rating4.5 / 5
Starting price$25 / month
Free planYes
Melio is a simple bill pay tool for small businesses. The free Go plan includes five ACH payments a month for one user. Core costs $25 a month ($20 billed annually) with 20 free ACH payments, Boost costs $55 with 50, and Unlimited costs $80 with unlimited ACH payments and users. All paid plans are free for the first 90 days. Extra ACH payments cost $0.50 and checks $1.50. It lacks the approval depth that larger finance teams need.
Pros
- Free plan for low volume
- Flat monthly plans, not per user
- Paid plans free for 90 days
Cons
- Per-payment fees after plan limits
- Lighter approval controls
Key features
- ACH and check payments
- Card payments to vendors
- Accounting sync
- Vendor payment requests
4. Tipalti
Best for paying vendors in many countries
Our rating4.4 / 5
Starting price$99 / month
Free planNo
Tipalti automates payables for companies that pay suppliers and partners across borders. It handles supplier onboarding, tax form collection, multi-currency payments, and reconciliation in one workflow. Pricing starts at $99 a month for the platform fee, and costs grow with volume and the modules you add, such as expenses or procurement. It suits finance teams that already pay a global vendor base. A domestic small business will pay for features it never uses.
Pros
- Strong cross-border payment support
- Supplier self-onboarding and tax forms
- Scales to high payment volume
Cons
- Total cost depends on volume and modules
- More than a domestic small business needs
Key features
- Global payments
- Supplier onboarding portal
- Tax compliance forms
- Multi-entity support
5. Stampli
Best for teams that collaborate on invoices
Our rating4.3 / 5
Starting priceCustom pricing
Free planNo
Stampli is AP automation built around the invoice itself. Approvers, buyers, and AP staff comment and resolve questions directly on each invoice, which cuts email back and forth. Its AI assistant learns your coding and approval patterns. Stampli sits on top of your existing ERP rather than replacing it, and adds payments, cards, and vendor management. Pricing is quote-only. It fits midsize teams with many approvers; a business paying a few dozen bills a month will not need it.
Pros
- Conversation on each invoice
- AI learns coding and approvals
- Works on top of your current ERP
Cons
- No published pricing
- More than low-volume teams need
Key features
- Invoice collaboration
- AI invoice coding
- ERP integrations
- Vendor management
6. AvidXchange
Best for midsize companies in real estate and construction
Our rating4.2 / 5
Starting priceCustom pricing
Free planNo
AvidXchange is AP automation and payments software for midsize businesses. It serves industries including real estate, construction, healthcare, education, and nonprofits, and connects to many of the accounting systems those sectors use. It also runs a supplier payment network. Pricing is quote-only, and buyers start with a demo. It is a strong fit for property managers and contractors with high invoice volume. Small businesses will find setup heavier than BILL or Melio.
Pros
- Deep industry focus
- Supplier payment network
- Built for high invoice volume
Cons
- No published pricing
- Heavier setup for small teams
Key features
- Invoice automation
- Approval workflows
- Supplier payments
- Industry ERP integrations
Compare the top accounts payable software
| Tool | Best for | Starting price | Free plan | Rating |
|---|---|---|---|---|
| BILL | Most small and midsize businesses | $49 / user / month | Free trial | 4.7 |
| Ramp Bill Pay | Companies that want free AP with corporate cards | $15 / user / month | Yes | 4.6 |
| Melio | Small businesses on a budget | $25 / month | Yes | 4.5 |
| Tipalti | Paying vendors in many countries | $99 / month | No | 4.4 |
| Stampli | Teams that collaborate on invoices | Custom pricing | No | 4.3 |
| AvidXchange | Midsize companies in real estate and construction | Custom pricing | No | 4.2 |
How to choose accounts payable software
Count your invoices and payments
Monthly volume decides the right tool. A business paying 20 bills a month does well on Melio or Ramp’s free plan. A team handling hundreds of invoices needs the approval routing and matching of BILL, Stampli, or AvidXchange.
Estimate payment fees
Check, wire, same-day ACH, and card payments often carry per-payment fees. Pull last quarter’s payments by type and price them on each tool. The cheapest subscription is not always the cheapest total.
Match approvals to your controls
List who must approve which bills and at what amounts. Confirm the tool can model those rules on the plan you plan to buy, and check how many approvers need paid seats.
Confirm the accounting sync
AP software must post bills and payments to your books without manual entry. Test the integration with your accounting system or ERP during the trial, including how it handles vendors, classes, and locations.
Frequently asked questions
What is accounts payable software?
Accounts payable software automates paying your vendors. It captures invoice data, routes bills for approval, schedules and sends payments by ACH, check, card, or wire, and syncs each transaction to your accounting system. It replaces manual data entry and paper check runs.
How much does accounts payable software cost?
Costs range from free to custom pricing. Melio and Ramp Bill Pay have free plans, Melio Core costs $25 a month, BILL starts at $49 per user per month, and Tipalti starts at $99 a month. Stampli and AvidXchange quote prices on request. Payment fees come on top.
Is there free accounts payable software?
Yes. Ramp Bill Pay runs on Ramp’s free plan with no software fee for standard payments, and Melio’s Go plan includes five free ACH payments a month for one user. Free plans work for low volume, but expect fees for faster or international payments.
What is the difference between BILL and Melio?
BILL is built for finance teams, with multi-step approvals, per-user pricing, and deep accounting sync. Melio is built for small business owners, with flat monthly plans and a free tier. Choose BILL when several people approve bills, and Melio when the owner pays them.
Related lists
Finance and Accounting
Best Expense Management Software in 2026
Cards, receipts, and reimbursements in one place.
Finance and Accounting
Best Accounting Software for Small Business in 2026
Keep the books, send invoices, and reconcile accounts.
Finance and Accounting
Best Invoicing and Billing Software in 2026
Send invoices and collect payments faster.