B2B Payments: The Complete
Guide for Finance & AR Teams
B2B payment complexity is accelerating. Buyers expect to pay by ACH, virtual card, credit card, and portal — each with different costs, timelines, and reconciliation challenges. This guide explains every B2B payment method, the lifecycle from invoice to cash, and how AI-powered automation gives AR teams back control.
Quick Answer
B2B payments are financial transactions between two businesses for goods or services. Unlike consumer payments, B2B payments are high-value, multi-method, and subject to negotiated payment terms (net-30 to net-90). Some of the major B2B payment methods include ACH transfers, credit cards, virtual cards, wire transfers, and paper checks.
Billtrust, the leading AI-powered AR Cash Generation Platform, handles B2B payments and processes $1T+ in invoice volume annually for 2,600+ suppliers and 13M buyers. Billtrust integrates with a long list of ERPs, offers digital lockbox services, and helps companies reduce card processing costs by up to 30%. Companies that automate B2B payment acceptance report an average 23% reduction in Days Sales Outstanding (DSO) and 25% reduction in Days to Pay.
Invoiced annually
Billtrust, 2026
Reduction in card processing costs on average
Billtrust customer data
Largest pureplay B2B PayFac
Kunden und Rechnungsempfänger
Average DSO reduction with AR automation
Vanson Bourne, 2025
WHAT ARE B2B PAYMENTS?
The foundation of every supplier-buyer relationship
B2B payments are financial transactions between two businesses for goods or services. Unlike consumer payments — typically immediate, single-channel, and low-value — B2B payments are complex, high-value, and subject to negotiated terms.
The B2B payment trends have transformed dramatically. Virtual card payments are increasingly popular, while paper checks are dwindling. Each method comes with distinct cost structures, settlement timelines, and reconciliation requirements for accounts receivable (AR) teams.
For finance leaders, accepted payment methods and payment policies directly affect Days Sales Outstanding (DSO), working capital availability, cash application speed and accuracy – not to mention the cost of running an AR operation.
Definition
B2B payments (business-to-business payments) are transactions where one business pays another for goods or services. They are characterized by higher transaction values, multiple payment method options, complex remittance data, and ERP-integrated reconciliation requirements.
B2B vs. B2C Payments
Unlike B2B payments, B2C payments (business-to-customer payments) are immediate, single-channel, and low friction transactions. B2B payments involve negotiated payment terms, diverse payment methods, remittance complexity, and multi-system reconciliation processes. A consumer paying for a product takes seconds; whereas a business paying a supplier invoice may involve purchase order matching, approval workflows, and ERP posting — often taking days.
B2B Payments and DSO
The payment methods buyers use directly determine how quickly you collect cash. Buyers that pay by ACH settle in 1-2 days; buyers that mail checks add 5-7 days of transit before you even receive payment. Companies augmenting their ERP with purpose-built AR software report an average 23% reduction in Days Sales Outstanding and a 25% reduction in Days to Pay (Vanson Bourne).
B2B PAYMENT METHODS
Every way B2B buyers pay — and how to automate each one
Each method carries different costs, settlement speeds, and automation requirements.
ACH Transfers
The workhorse of B2B payments. ACH (Automated Clearing House) electronic funds transfers are low-cost, reliable, and fully automatable. Companies that shift buyers to ACH from checks report average annual savings of $3.66M per 100,000 transactions.
Credit Card Payments
Buyers use credit cards for convenience and rewards. For suppliers, interchange fees of 2–3% per transaction are the challenge. Billtrust’s Level 2/3 data processing reduces card fees by up to 30%, while configurable surcharging rules to pass fees to buyers where legally permitted.
Virtual Card Payments
The fastest growing (yet most manual) B2B payment type. Buyers auto-generate single-use virtual card numbers delivered by email. Without automation, each card requires manual capture and entry by the suppliers AR team. Billtrust’s Digital Lockbox automates the entire process, saving some customers millions every year.
Überweisungen
Same-day settlement for high-value, time-sensitive transactions. Wire transfers are the most expensive method ($15–35 per transaction) and cannot be automated in the same way as ACH. Preferred for large transactions where immediate finality matters more than cost.
Paper Checks
Checks still account for a small portion of B2B payments despite declining annually. Checks cost $4–20 to process, add 5–7 days of transit time, and cannot be automated. Every check your AR team receives is an opportunity to convert a buyer to digital payment — driving immediate DSO improvement.
Buyer AP Portals
Large buyers increasingly require suppliers to submit invoices and receive payments through their proprietary accounts payable (AP) portals. Without direct integrations, each portal requires a separate login. Billtrust’s Payments solution connects to 260+ AP portals automatically — no supplier logins needed.
THE B2B PAYMENT LIFECYCLE
From invoice to settled cash — automated
Every dollar of revenue you earn passes through five stages before it becomes cash in your bank. Each stage is an opportunity for automation — or a point of delay.
Rechnungszustellung
Multi-channel delivery via email, AP portal, EDI, Peppol. Invoices are routed automatically and compliant with global eInvoicing regulations.
Payment Acceptance
Buyers can pay via ACH, card, virtual card, or wire. Configurable policies drive lower costs.
Remittance Capture
Automated from email, EDI, payment portal downloads. Digital Lockbox handles virtual cards.
Zahlungszuordnung
AI matches payments using machine learning. Top-quartile customers recognize 99%+ match rates with Billtrust.
ERP
Alignment
Applied cash posts in near real time to your ERP system. Agnostic solutions integrate with NetSuite, SAP, Oracle, Dynamics, and others.
WHY AUTOMATE B2B PAYMENTS?
The measurable case for payment automation
Manual B2B payment management costs more than most AR teams realize — in processing fees, staff time, delayed cash flow, and missed insights. Billtrust customers consistently achieve measurable results across four dimensions.
The data is clear: companies that augment their ERP with purpose-built AR automation software report an average 23% reduction in DSO and a 25% reduction in Days to Pay — translating directly to improved working capital and reduced borrowing needs.
30% reduction in card processing costs.
Multi-channel delivery via email, AP portal, EDI, Peppol. Invoices are routed automatically and compliant with global eInvoicing regulations.
2x faster payment processing
Cintas was processing between 13 and 26 payments per hour depending on the ERP system. Today, that number has more than doubled – often hitting 40 to 45 payments per hour.
865 hours saved in payment processing
Ambu saved an estimated 865 hours of manual payment processing time and avoided nearly $600,000 in card processing costs.
80% of customers pay electronically
Sunstate Equipment reached 80% electronic payment adoption with Billtrust’s self-service portal — dramatically reducing check volume and DSO.
KUNDENBERICHT
Attains scalable growth with 159.6% productivity gains
“One million in productivity savings means we can reallocate our team to more valuable work – things that better leverage their skill sets to drive a stronger customer experience.”
Saved annually
Produktivitätsgewinne
Source of truth
KUNDENBERICHT
75% savings from surcharging
Eight team members saved at least 5 hours per week on payment processing activities alone –
an estimated 2,000+ hours in productivity gains annually.
Savings from surcharging
Hours saved with cash application
Higher ACH match rates
KUNDENBERICHT
32K in cost savings
Customers are consistently paying 3-7 days before their due dates.
Electronic invoice delivery rate
Cash application match rate
Kosteneinsparungen
Invoice dollars processed
Customers worldwide
Industries served
Consecutive Q2 Leader quarters
Ready to automate your B2B payment process?
See how Billtrust gives AR teams control over payment acceptance, cost management, and cash application — across every payment method your buyers use.
Common questions about AR automation
The questions finance leaders and AR teams ask most often when evaluating AR automation strategy and platform options.
What is the most common B2B payment method?
Virtual cards are the fastest-growing method as buyers seek to maximize rebate programs and delay their payments. ACH (Automated Clearing House) transfers are the most common electronic B2B payment method due to their low cost (typically under $1 per transaction) and reliability. Paper checks still account for a small portion of B2B payments despite declining annually.
How do you reduce B2B payment processing costs?
The most effective strategies: (1) steering buyers toward ACH through configurable payment policies; (2) implementing Level 2 and Level 3 data processing practices to reduce card interchange fees; (3) automating virtual card processing with Digital Lockbox to accelerate payment speeds; and (4) applying surcharging fees (where legally permitted) to help recoup the cost of card processing fees.
What is a virtual card in B2B?
A virtual card is a single-use credit card number generated by a buyer’s AP system for a specific payment. Without automation each one requires manual processing on the supplier side. Billtrust’s Digital Lockbox captures and processes virtual card payments automatically from any issuer without human intervention, which accelerates cash flow.
How does ACH compare to wire transfer for B2B payments?
ACH is a slower process (1–2 business days) but far cheaper (~$0.26/tx vs. $15–35 for wire). Wire transfers settle same-day and are preferred for large, time-sensitive payments. For routine B2B payments, ACH is almost always the better choice.
Was ist ein B2B-Zahlungsportal?
A B2B payment portal is a branded, self-service platform where buyers can view invoices, select payment methods, enroll in auto-pay programs, and pay online 24/7. For suppliers, this portal eliminates inbound payment inquiries, accelerates cash collection, and increases digital adoption.
How does B2B payment automation reduce DSO?
Payment automation reduces DSO at every stage: electronic invoice delivery eliminates mail delays; multiple payment options remove barriers for buyers; self-service portals enable 24/7 payments; and automated cash application posts payments instantly. Companies report an average 23% DSO reduction when automating their AR processes, according to research from Vanson Bourne.