BILL vs Melio for ACH Vendor Pay: 3-Way SMB 2026

The category decision is which AP product originates vendor credits, not which KYC vendor validates consumer WEB debits. BILL vs Melio for ACH vendor payments is an SMB payables comparison. Nacha WEB-debit account validation is a different job.

BILL (formerly Bill.com) is AP/AR plus cards for SMBs and practices. Melio is ACH/check vendor pay, often through the accountant channel. US small businesses: 33M+ according to SBA (2025), SBA Office of Advocacy 2025 Small Business Profile, including non-employers; employer firms only is about 6 million. Most of those shops pay vendors. Few of them should buy a WEB-debit validation stack to send a credit.

This page is published from the homepage. No vendor paid for inclusion.

TL;DR: Choose BILL when you need AP plus AR plus optional spend/cards in one SMB platform, and you will pay per user. Choose Melio when you want a lower-friction vendor-pay path, including a $0 Go plan with 5 free ACH per month. Keep QuickBooks as the books. Orchestrate only when AP, the bank, and the GL still disagree after a named approver hold.

Vendor credits are not WEB debits

A vendor credit is you paying a supplier. A WEB debit is you pulling a consumer account with internet authorization. Nacha rules for WEB first-use validation do not score this buy. If someone tries to sell you Plaid Signal as a BILL replacement, they mixed the jobs.

Adjacent SMB reading: payroll processing automation, Google Business Profile checklist, Zoho CRM alternative, and Gusto/QuickBooks/ADP payroll.

BILL Essentials list: $49 per user/month according to BILL (2026-09-06), with Team $65 and Corporate $89 per user/month; Enterprise is custom. ACH/ePayment from bank is $0.59 on BILL’s payor fee table.

Melio Go list: $0 / 5 free ACH according to Melio (2026-09-06), then $0.50 per extra ACH; Core $25/mo ($20 annual) plus users; Boost $55/mo ($44 annual); Unlimited $80/mo ($64 annual) with unlimited free ACH.

Key Takeaways

• BILL is AP/AR plus cards; Melio is vendor pay with a free-forever Go tier.

• Public list checked 2026-09-06: BILL $49/$65/$89 per user; Melio $0/$25/$55/$80.

• BILL ACH $0.59; Melio ACH $0.50 after free allotment (Unlimited: unlimited free ACH).

• WEB-debit validation is a different Nacha job.

• Orchestrate only after vendor IDs, approval holds, and QBO sync exist.

Evaluation weights for SMB ACH payables

Weights assume an SMB or practice paying vendors from US bank accounts and syncing to QBO or Xero. A consumer-debit originator should leave this page.

Normalized feature matrix

Scores from public pricing/product pages checked 2026-09-06. USTA column is first-party design numbers (1 hold, 1 recipe, 8 gates).

BILL wins the AP+AR+cards bundle. Melio wins a cheaper entry and unlimited-ACH Unlimited plan. In our own 14,228-page library, pages without a proprietary column are the ones competitors clone — hence the USTA 1s.

Pricing and TCO (checked 2026-09-06)

Example: 2 AP users, 80 ACH vendor payments/month, QBO.

BILL Team is $65 per user. 80 × $0.59 = $47.20. Melio Core includes 20 free ACH, so 60 × $0.50 = $30, plus $25 + $10 extra user = $35 software. Unlimited Melio at $80/mo with unlimited free ACH would be $960/year software if ACH volume is the constraint. BILL Corporate is $89 per user if you need procurement native. Spend & Expense is $0 per user software on BILL, cards separate.

BILL’s 2021 customer survey of over 2,000 customers is the source for their “50% less time on AP” claim on the pricing page — treat it as BILL’s survey, not an independent SLA.

Accountant median wage: $83,680 according to BLS (2025). Owner hours stuffing envelopes are that wage in disguise.

BILL payor ACH fee: $0.59 according to BILL (2026-09-06), on the payor transaction-fee table (bank/BILL balance to ACH/ePayment). Check is $1.99. Instant Payment is 1.0% with a $9.99 min and $100 max.

Nacha WEB debit is a different job according to Nacha (2026). Vendor credits on BILL or Melio are not first-use consumer WEB debits.

BILL vs Melio profiles

BILL — best for AP/AR plus cards

BILL is AP/AR for SMBs and an accountant console at $49/month for firms. Best fit: practices that want bills, invoices, and optional Divvy-style spend in one vendor. Limitations: per-user AP/AR pricing adds up; Essentials is CSV-only to books; ACH is $0.59. Implementation: vendors, approval policy, QBO two-way on Team+, then 12 payments. Primary evidence: BILL pricing page 2026-09-06. Disqualifier: you needed $0 software and 5 ACH.

Melio — best for low-friction vendor pay

Melio is ACH/check vendor pay with accountant-channel motion. Best fit: SMBs and firms that want Go at $0 or Core/Boost/Unlimited with QBO/Xero sync from Core up. Limitations: Go is one user and 5 free ACH; NetSuite is Unlimited; card-pay-out is a fee path. Implementation: vendors, 5–20 test ACH, then approvals on Core+. Primary evidence: Melio pricing 2026-09-06. Disqualifier: you needed native corporate cards as the product.

Keep checks — best when volume is tiny

If you send four checks a month and QBO already has vendors, a new AP network is how you duplicate vendor IDs. Best fit: one books, one bank, one signer. Limitations: you still mail paper. Disqualifier: 80 ACH would be cheaper than postage plus owner time.

Cross-system AP holds

When BILL marks a bill paid but QBO Bill.Balance is still open, a proposed US Tech Automations path could match the vendor ID, pause for the owner, and only then clear the bill. Prerequisites: BILL or Melio webhook/export, QBO API, unique vendor key, and a human who will catch a $0.59 ACH fee posted as a second bill. Configurable capability, not a live SMB result. The finance-accounting agent path is the allowlisted route for that hold.

A second proposed path: a Melio payment above a written limit waits for a second approver before ACH leaves. Output: hold queue, vendor, amount, and a yes/no. Same rules: no implied deployment.

Zapier plus Make plus n8n can connect BILL or Melio to QBO and Slack and can keep run histories, retries, error branches, and audit evidence when configured. The operator still owns observability, idempotency, escalation, access controls, retention, and maintenance. A proposed US Tech Automations design would require the approver hold before any ACH above the written limit and write the decision back to the bill.

Worked AP week: 85 vendors, $4,200, $0.59

An SMB paying 85 vendors a month at $4,200 average bill with a $0.59 ACH fee can treat QBO Bill.Balance hitting 0.00 after a BILL payment as the all-clear that the vendor should not be paid twice. The 85, $4,200, and $0.59 figures are a worked scenario; Bill.Balance is a real QBO field. If Melio is the rail, keep the free-ACH allotment in the same runbook as the $0.50 overage.

Who this is for

This comparison is for SMB owners, practice managers, and accountants who pay US vendors by ACH or check and sync to QBO or Xero. Stack: AP tool plus bank plus books. Pain: checks, duplicate vendors, no approval log.

Red flags: a consumer-debit originator (wrong Nacha job); a team whose BILL or Melio already pays with dual approval and QBO sync; a buyer who will not connect books.

Accountant console vs direct SMB

BILL’s accountant console is $49/month on the same pricing page, with wholesale client subscription pricing and a 10–20% client discount that depends on how many clients you onboard. That is a firm motion. Direct SMB is per-user Essentials/Team/Corporate. Do not quote a practice the accountant-console number and then seat five owners on Corporate.

Melio’s accountant-channel story is real, but the public list you can check today is Go/Core/Boost/Unlimited. Go is one user and 5 free ACH. If a bookkeeper and an owner both need to approve, Go is the wrong SKU. Core adds $10/mo per extra user on monthly ($8 annual). Unlimited is $80/mo with unlimited users and unlimited free ACH — the SKU you re-run when ACH count, not seat count, is the constraint.

1099 is adjacent, not free. BILL lists $2.99 per 1099 e-file to IRS ($1.99 via accountant console). Melio Core+ syncs W-9/1099 automation (Tax1099). If FIRE-to-IRIS is your actual 2026 problem, that is a different shortlist. Do not buy Melio Unlimited solely because someone mentioned 1099s.

Procurement on BILL is native on Corporate and an add-on on Essentials/Team. If your pain is POs, do not buy Essentials and hope. If your pain is 80 vendor ACH, Melio Core or Unlimited is the comparison, not BILL procurement.

Duplicate vendors are the silent TCO. Import 25 vendors, pay 12, export twice. If BILL and QBO disagree on vendor ID, you will pay twice. The hold on Bill.Balance is cheaper than a second AP network.

Write the approval matrix on one page: amount thresholds, second approver, weekend exception. BILL Corporate custom policies and Melio Core+ vendor-based approvals only work if that page exists. A tool cannot invent your signer.

BILL Instant Payment at 1.0% ($9.99 min, $100 max) and Melio instant at 1% ($75 max on some rails) are not ACH. Do not compare them to $0.59 / $0.50 ACH as if they were the same product. Same-day ACH add-ons (BILL Pay Faster ACH $11.99 with 10:00 a.m. PT same-day cutoff) are also a different SKU. Put the cutoff in the runbook or you will pay a rush fee for a payment that still misses the vendor’s due date.

If you are an accounting firm, start from the accountant console economics, not from the 2-user SMB table. If you are a single SMB, ignore partner discounts you will never earn. The 33M+ small-business count includes shops that should stay on checks. Be honest about volume before you migrate.

W-9 collection is on both BILL (W-9 Agent on listed plans) and Melio Core+. That is TIN hygiene for 1099 season, not WEB-debit validation. Keep those jobs named separately so a salesperson cannot swap them.

International fees are not ACH. BILL international USD wire is $19.99 on the public table. Melio global ACH is a $20 flat fee on some USD paths. If you pay overseas vendors, re-run TCO; the 80-ACH domestic example does not apply.

Cards-out (pay a vendor who does not take cards) is a fee path on both. Do not call it “free ACH.” The Go plan’s 5 free ACH are bank-to-bank. Blow that allotment and you are on $0.50. Unlimited is how you stop counting. Re-count after the first month; allotments reset monthly.

Common AP mistakes

Buying WEB-debit validation for vendor credits. Running BILL and Melio on the same vendor list. Treating Go’s 5 free ACH as unlimited. Putting procurement on Essentials and being surprised it is an add-on. Letting a Slack emoji be the approval.

Frequently asked questions

Is BILL or Melio cheaper for 80 ACH a month?

On public 2026-09-06 lists, Melio Core for 2 users plus $0.50 overage is lower software+ACH than BILL Team plus $0.59. BILL may still win if you need AR, cards, or accountant-console economics. Re-run the table with your user count.

Is this the same as NACHA WEB debit validation?

No. Vendor credits are not first-use consumer WEB debits. Do not buy GIACT to replace Melio.

When should an SMB skip a workflow layer?

Skip US Tech Automations when BILL or Melio already pays with dual approval and QBO sync, when you will not connect books, or when no owner will sit a hold. Zapier plus Make plus n8n are enough if your team will own logs, retries, and access control.

Can we keep PayPal as the only AP tool?

You can keep PayPal for a few vendors. Do not let PayPal email be the source of truth for QBO bills. The AP tool owns the payment; QBO owns the books.

What is the first migration object?

Vendors plus bank accounts, not historical check images. Unique vendor IDs first. Then bills. Then ACH.

How should we test a duplicate payment?

Pay a $1 test bill, confirm QBO Bill.Balance is 0, then attempt a second pay. If the product allows it without a hold, do not migrate live vendors.

Pick BILL or Melio, then the hold

Pick BILL for AP/AR/cards or Melio for lower-friction vendor ACH. Put user seats and ACH fees in the same quote. Pilot 12 payments. Export twice. If you still need an approver hold between paid and QBO clear, review plan options.