Best B2B Payments Software in 2026: Supplier Payment Platforms Compared

Best for: Small businesses that want free or low-cost bill pay with the option to pay by card even when vendors only accept ACH or check.

• Paid plans include 20, 50 or unlimited free ACH payments per month depending on tier.
• Receivables are included: customers can pay you by ACH free or by card at 2.9%.
• Melio's site links to FAQs about Xero acquiring Melio, so confirm how ownership affects your plan and integrations before committing long term.

Our take: Melio is built for small businesses that want to stop writing checks without paying for a heavy AP system. The free Go plan covers one user and five free ACH payments a month, and paid tiers raise the free ACH allowance and add users and features after a 90-day free period. Fees are published for every rail: $0.50 per ACH, $1.50 per check, 1% capped at $75 for same-day ACH or instant transfer, and 2.9% when you pay by card, which lets you extend cash flow by paying with a card even when the vendor receives ACH or a check. Melio says more than 100,000 business owners use it. In a trial, run a month of real bills through it and total the fees by payment method. Compared with BILL, Melio is cheaper for small teams and lighter on approvals; compared with Airwallex, its international payments are pricier unless you pay in local currency.

Best for: Small and midsize businesses and their accounting firms that want approvals, payables, receivables and accounting sync in one platform.

• BILL reports 8.3M network members paying or getting paid through BILL, which simplifies vendor onboarding.
• Team adds AI multi-line bill coding and cash flow forecasting for QuickBooks Online users.
• Every user who needs access counts toward the per-user fee, and automatic ERP sync for NetSuite or Sage Intacct requires Enterprise pricing.

Our take: BILL combines payables and receivables with approvals, a vendor network and accounting sync, which makes it a common choice for SMBs and the accounting firms that serve them. Essentials at $49 per user per month uses manual CSV import and export; most teams will want Team at $65 for automatic QuickBooks Online and Xero sync, or Corporate at $89 for custom approval policies, multi-entity accounting, SSO and procurement. Per-payment fees are published: $0.59 for ACH, $1.99 for a mailed check, free virtual card payments and free international FX wires with an exchange rate applied. BILL's network of 8.3 million members means many vendors already have payment details on file. In a trial, count how many users truly need seats, since approver discounts on Corporate can help, and confirm which accounting plan your ERP needs. Compared with Melio, BILL offers stronger controls at a higher subscription; compared with Tipalti, it fits smaller teams with mostly domestic suppliers.

Best for: Companies that pay overseas suppliers regularly and want multi-currency accounts, local rails and bill pay with low FX costs.

• Published FX markups let you calculate the cost of foreign-currency supplier payments before you pay.
• Bill Pay supports OCR bill capture, batch payments and multi-layer approvals by currency and amount.
• Advanced AP controls such as bulk approvals and vendor approval workflows require Grow, and 3-way matching requires a custom Accelerate plan.

Our take: Airwallex is a global business account with bill pay built in, which suits companies whose supplier base is international. You hold balances in multiple currencies, pay through local rails in more than 120 countries without a transfer fee, and convert at 0.5% above interbank for major currencies or 1.0% for others. Domestic US and Canadian transfers are free, and SWIFT costs $15 to $25. The free Explore plan includes bill upload or email, OCR data extraction, domestic and international bill payment, AI coding and batch payments; Grow adds bulk approvals, rules-based automation, vendor approval workflows and purchase orders. In a trial, pay one supplier in each of your main currencies and compare the landed cost with your bank. Compared with Melio and BILL, Airwallex is typically cheaper for cross-border payments but less focused on US check workflows; compared with Tipalti, it lacks built-in tax form collection but has a free plan.

Best for: Mid-market companies paying many international suppliers or payees that need supplier onboarding, tax forms and multi-entity AP.

• Unlimited users with no per-approver fees, and a self-service supplier portal for onboarding.
• Tax compliance covers the US, UK, EU and Canada, with OFAC and AML screening and SOC 2 Type II.
• The starting subscription is low, but per-invoice and per-payment fees are quote-based, which makes early cost comparison harder.

Our take: Tipalti is designed for finance teams that pay suppliers or payees across many countries and entities. Suppliers onboard themselves through a portal that collects bank details and tax forms, Tipalti validates tax IDs and screens payees, and payments go out in 120 currencies through local rails, ACH, wire, check or the Tipalti Card. Invoice capture, PO matching and approval routing are supported by a set of AI agents, and add-on modules cover procurement, expenses and treasury. Subscriptions start at $99 per month for Accounts Payable and $249 for Mass Payments, with unlimited users, but transaction fees vary by method and destination and are quoted. In evaluation, ask for a fee schedule based on your real payment mix and entity count, and test the supplier portal with a few international vendors. Compared with BILL, Tipalti is stronger on global payees and tax compliance; compared with Routable, it covers more AP workflow but with less published pricing.

Best for: Marketplaces, gig platforms and operations-heavy companies that run large batches of vendor or contractor payouts.

• Unlimited user seats, vendor onboarding and tax form collection with 1099 and 1042-S filing options.
• API-first payouts suit platforms paying thousands of vendors programmatically.
• At $1,250 per month for the entry plan, Routable makes sense only at meaningful payout volume.

Our take: Routable focuses on paying large numbers of vendors, contractors and partners efficiently. Payments can be sent from a dashboard, through CSV uploads or via API, which suits marketplaces, gig economy companies, insurers and logistics businesses that pay many recipients. Vendors onboard themselves, and add-ons cover W-8 and W-9 collection, 1099 and 1042-S filing, OFAC monitoring and bank account validation. The Growth plan costs $1,250 per month and includes unlimited seats, accounting and ERP integrations, domestic, international and instant payments, mass payouts and API access; invoice OCR, PO matching and advanced approval workflows start at Scale. Per-transaction fees are not listed on the pricing page. In a demo, ask for transaction pricing by rail and the vendor count included in your plan. Compared with Tipalti, Routable is more payouts- and API-focused; compared with BILL or Melio, it is built for higher volume and a larger budget.

Best for: Mid-market and enterprise AP teams that want payments outsourced, suppliers enrolled for electronic payment and rebates on virtual card spend.

• Corpay handles vendor outreach and enrollment across a network of 640,000+ electronic-payment vendors.
• Rebates on virtual card payments; Corpay cites more than $800M in annual client rebates.
• Rebate claims depend on supplier card acceptance, and suppliers may pass card acceptance costs back through pricing.

Our take: Corpay Payments Automation takes a different approach from the software tools above. You upload one payment file from your ERP, and Corpay routes each payment by the method each vendor has enrolled in: virtual card where accepted, then ACH, then check. Its team handles supplier outreach and enrollment across a network of more than 640,000 vendors, so your AP staff do not chase bank details. When suppliers accept virtual cards, your company earns rebates, which Corpay says average $43,000 a year per client. Integrations cover NetSuite, Dynamics 365, Sage Intacct, QuickBooks and Acumatica, and Corpay's cross-border business adds international payments. Pricing is quoted, along with a custom rebate analysis. In evaluation, ask for the analysis using your actual vendor file and confirm how vendor fees are handled. Compared with BILL or Tipalti, Corpay is more of an outsourced payment service than self-serve software, and it suits companies with large domestic supplier bases.