Reviewed by Mayer Hyman, Payments Specialist | Reviewed for accuracy July 2026
Key Takeaways
- More than half of U.S. B2B invoices are overdue at any given time, and unpaid receivables tie up cash that businesses need to operate and grow.
- Days Sales Outstanding (DSO) is the clearest early-warning metric for collections health — tracking it monthly, by customer segment, catches problems before they become write-offs.
- Automated invoicing and payment reminders consistently outperform manual follow-up, cutting the time and staff hours needed to collect.
- Offering more ways to pay — cards, ACH, digital wallets, payment links — removes the friction that causes otherwise willing customers to pay late.
- Early-payment discounts and AR automation software work best together: the discount gives customers a reason to pay fast, the software makes it effortless.
Why Accounts Receivable Deserves More Attention Than It Gets
Accounts receivable is often treated as back-office bookkeeping — a ledger to reconcile at month-end. In reality, AR is one of the biggest levers a business has over its own cash flow. Every dollar sitting in an unpaid invoice is a dollar that isn’t funding payroll, inventory, or growth.
The scale of the problem is larger than most finance teams assume. Federal Reserve data from 2024 puts the share of U.S. B2B invoices that are currently overdue at roughly 50%, and the 2025 AFP Payments Fraud and Control Survey found that businesses report up to 30% of their monthly invoiced sales are past due at any given time (Kaplan Group, 54 Statistics on B2B Payment Delays). That’s not a handful of slow payers — it’s a structural cash-flow gap that affects the majority of B2B companies.
The good news: AR is also one of the more fixable parts of the business. Unlike sales cycles or supply chains, collections is largely a process and technology problem — and both are within a company’s direct control.
Start With the Metric That Tells You the Truth: DSO
Days Sales Outstanding (DSO) measures the average number of days it takes a company to collect payment after a sale. It’s calculated as:
DSO = (Accounts Receivable ÷ Total Credit Sales) × Number of Days
DSO benchmarks vary widely by industry — retail and e-commerce businesses that collect via card typically see DSO of just 1-3 days, while construction and healthcare, where progress billing, retainage, and insurance claims processing add delay, commonly run 60-120 days (KlarMetrics, DSO Benchmarks by Industry 2026). What matters most isn’t hitting a universal number — it’s tracking your own DSO trend over time and by customer segment, so a slide from 35 to 50 days gets caught in month two, not month six.
Why DSO Trends Matter More Than the Snapshot
A single DSO reading is a snapshot; the trend is the diagnosis. Rising DSO usually signals one of a few things: credit terms that have drifted too loose, a collections process that depends on someone remembering to follow up, or a payment experience that’s harder than it needs to be for the customer. Isolating which of those three is driving the number is the first real step toward fixing AR.
Six Ways to Bring Receivables Back Under Control
1. Automate Invoicing and Payment Reminders
Manual follow-up doesn’t scale, and it’s inconsistent — the invoices that get chased are the ones someone happens to remember. Automated invoicing systems send invoices the moment work is completed or goods ship, and automated reminder sequences follow up before, at, and after the due date without requiring a staff member to track every account by hand.
This isn’t a marginal improvement. Despite broad awareness of the benefits, only 17% of businesses report having fully automated their AR processes (American Express Trendex: B2B Payments Edition, Dec. 2024–Jan. 2025, via PYMNTS Intelligence). Among the companies that have automated, PYMNTS Intelligence research citing Versapay found that automating manual AR workflows can cut collection times by as much as 67% — a substantial reduction in the time invoices sit unpaid.
2. Give Customers More Ways to Pay
A common but underappreciated cause of late payment isn’t unwillingness — it’s friction. A customer who has to mail a check, call in a card number, or log into a clunky portal is more likely to delay than one who can pay in two clicks. Accepting credit and debit cards, ACH/bank transfers, and digital wallets, and offering a hosted payment link that can be embedded in an emailed invoice, removes most of the excuses for delay. Card payments in particular give customers points, purchase protection, and a short float period — benefits that make them more willing to pay promptly rather than push the invoice to the bottom of the pile.
3. Offer Early-Payment Discounts
Structured discounts — commonly written as “2/10 net 30,” meaning a 2% discount if paid within 10 days instead of the full 30 — give customers a direct financial incentive to move a payment up the priority list. A 2% discount on a $100,000 invoice costs $2,000, but the value of getting that cash three to four weeks earlier, compounded across a full AR ledger, is often worth far more than the discount itself. Early-payment discount programs are also associated with fewer billing disputes, since customers reviewing an invoice closely enough to claim a discount tend to flag errors sooner rather than after 60 days of silence.
4. Use Tokenization and Recurring Billing to Cut Payment Errors
A meaningful share of “late” payments aren’t really about willingness to pay — they’re failed transactions: an expired card, a re-issued number, a payment that bounces and never gets retried. Tokenization replaces stored card numbers with a secure, PCI-compliant token, and card-network account-updater services automatically refresh expired or reissued card details behind the scenes. For recurring or installment relationships, automated recurring billing removes the need for a customer to manually re-authorize every charge, which eliminates a common point of payment failure.
5. Set Up Value-Add Reminders and Payment Links
Billing and invoicing tools that include built-in reminder logic — and payment links that can be dropped into an email, text, or invoice PDF — turn collections into something that happens automatically rather than something a staff member has to initiate. A payment link takes the customer straight to a hosted payment page, with the invoice already attached, cutting out the back-and-forth of “how do I pay this?”
6. Integrate AR Automation Software With Your Existing Systems
Point solutions that don’t talk to your accounting or ERP system create duplicate data entry and reconciliation headaches — often enough friction that teams quietly abandon the tool. AR automation software that integrates with your existing payment portal and general ledger keeps a single source of truth, gives customers a secure self-service login to view and pay invoices, and removes the manual reconciliation step that eats up finance team hours every month.
Putting It Together: A Realistic Path Forward
No single tactic here fixes AR on its own. The businesses that see real DSO improvement typically combine two or three: automated reminders paired with more payment options, or early-payment discounts paired with a self-service portal. The starting point is simply measuring DSO consistently and identifying where in the process — invoicing delay, payment friction, or lack of follow-up — the days are actually being lost.
Cartis Payments works with businesses to put the payment-acceptance side of this equation in place — card and ACH acceptance, tokenization, recurring billing, and hosted payment links — so collections stops depending on manual follow-up. If you’re evaluating how to modernize your AR process, reach out to our team to talk through what would fit your current systems.
Frequently Asked Questions
What is a good DSO for a small or mid-sized business?
It depends heavily on industry. Retail and e-commerce businesses collecting primarily by card often see DSO in the single digits, while B2B service and project-based businesses commonly run 30-45 days, and construction or healthcare can run 60-120 days due to industry-specific billing structures (KlarMetrics, 2026). The more useful benchmark is usually your own historical DSO trend rather than a generic industry number.
How does AR automation actually reduce DSO?
Automation removes the delay between “invoice is due” and “someone follows up.” Automated reminders go out on a fixed schedule regardless of staff workload, and payment links reduce the steps a customer needs to take to pay. Research from PYMNTS Intelligence has linked automating manual AR workflows to collection-time reductions of up to 67%.
Do early-payment discounts actually pay for themselves?
In most cases, yes. A typical 2/10 net 30 discount costs 2% of the invoice value but accelerates payment by roughly three weeks. For a business paying for inventory, payroll, or debt service on a tight cash cycle, the value of that accelerated cash flow frequently exceeds the discount cost, and discount programs are also associated with fewer disputed invoices.
What’s the difference between AR automation software and a payment gateway?
A payment gateway processes the transaction itself — the card or ACH charge. AR automation software sits a layer above that, handling invoicing, reminder sequences, reconciliation, and reporting. The two are complementary: the gateway needs to accept the payment, and the AR software needs to make sure the invoice gets to the customer and gets followed up on until it’s paid.
Why are so many B2B invoices overdue in the first place?
It’s rarely one cause. Federal Reserve data indicates roughly half of U.S. B2B invoices are overdue at any given time, and industry surveys point to a mix of factors: loose credit terms, manual and inconsistent follow-up, limited payment options, and genuine cash-flow strain at the paying business (Kaplan Group, 2025). Because the causes are varied, the fix usually involves several of the tactics above rather than one silver bullet.
