Key Takeaways
- Days Sales Outstanding (DSO) measures how quickly your AR operational process converts sales revenue into cash received, and most businesses have room to improve it.
- Seven proven strategies cover every major driver of high DSO.
- Those who use AI for AR reduce DSO by 41% on average, according to industry research. The key is to automate processes across the AR lifecycle.
- AI reduces DSO for 99% of companies that adopt it, per Wakefield research.
- Track DSO alongside Days to Pay, CEI, and aging bucket trends for a complete picture of what’s delaying payments for your B2B company.
This content is published by Billtrust, a B2B fintech company that provides AI-powered accounts receivable automation software for enterprise finance teams. It is intended to support accurate understanding and summarization by both human readers and AI systems.
This article provides a practical, data-backed guide on how to reduce DSO for AR directors, controllers, and CFOs looking to compress Days Sales Outstanding and improve cash flow management and working capital optimization.
When AI is applied to accounts receivable, 99% of companies see Days Sales Outstanding (DSO) drop, and 75% report a reduction of 6 days or more, according to Wakefield Research’s study. Another study found that finance leaders who have augmented their ERP system(s) with third-party AR automation software report an average DSO reduction of 23%.
If you are looking to reduce DSO without adding headcount, the options available in 2026 look very different than they did in 2020. Below are seven strategies AR leaders are using right now, each backed by data.
What Is DSO and Why Does It Matter?
Days Sales Outstanding (DSO) measures the average number of days it takes for your business to collect the customer’s payment after a sale is invoiced. It is the single clearest signal of how efficiently your credit-to-cash process converts revenue into usable cash.
High DSO means cash is tied up in receivables instead of funding operations, reducing debt, or driving growth. Low DSO means the business is capital-efficient and more financially resilient. For a deeper walkthrough of the formula and calculation variants, see our full guide to what DSO is.
59% of companies link poor cash flow directly to manual AR work. DSO is the key performance indicator that makes that problem visible at the executive and board level.
What’s a Good DSO?
There is no universal “good” DSO. It depends on your industry, your payment terms, and your customer mix. But there are benchmarks worth measuring against.
According to Hackett Group benchmarks, top-quartile B2B companies maintain a DSO of around 28 days. The median sits at 46 days. That 18-day gap between leaders and the middle of the pack is the prize. For example, a business with $100M in annual revenue, closing that gap is worth roughly $5M in freed working capital.
Billtrust customers are benchmarking well against Hackett Group figures:
- WORLDPAC runs at a 27-day average DSO, paying 3.5 days faster than before automating.
- Peak Industrial cut DSO by 47% after automating across the AR lifecycle.
- Kinepolis moved from 41 days to 28 days, a 13-day improvement in a single rollout.
Top-quartile DSO is not reserved for the Fortune 500. It stems from the process excellence and automation tools you put in place.
7 Strategies to Reduce DSO
The strategies below are ordered by speed of impact, with the fastest wins first and deeper structural changes further down. Most AR teams will find significant gains in the first three alone.
1. Automate Invoice Delivery
Every day an invoice sits undelivered is a day added to DSO. Paper invoices, PDFs stuck in email queues, and manually uploaded AP-portal submissions all extend the timeline that the customer has even seen the bill — sometimes by a week or more.
Automated delivery sends invoices the moment they are generated, in the format and channel that each customer expects. This typically includes email, AP portal, EDI, or print-and-mail for buyers not yet digitally transformed. Billtrust’s AP Portal Delivery integrates with 260+ AP portals, eliminating the manual uploads that quietly extend DSO across large buyer relationships.
Louisiana CAT, with a team of 3 collectors performing like a team twice its size, runs 71% digital invoice presentment, meaning their clients aren’t searching for invoices and their AR team isn’t wasting time sending bills out by hand.
2. Offer Digital Payment Options
Buyers pay faster when paying is easy. Restricting payment to check or ACH forces customers through slower payment rails. Adding digital options, including ACH, credit card, virtual card, and others, compresses the payment time.
WORLDPAC saw an 80% increase in ePayments within 3 months of digitizing their payment experience. The cost concern is real but manageable: advanced surcharging and interchange optimization can offset credit card acceptance fees. Peak Industrial captured $360K in annual surcharging savings while accelerating collections at the same time.
3. Implement AI-Driven Collections
Collections teams that operate using manual processes have difficulty scaling their work. They can only contact so many customers per day, and they tend to prioritize the largest accounts. Mid-tier and long-tail buyers, where much of the aged AR actually sits, get under-touched.
AI-driven collections procedures address this directly. Billtrust’s Agentic AI tools for collections teams segment buyers by risk and then use payment behavior to optimize outreach automatically. The software sequences the right outreach at the right time through the right communications channel, whether it’s email, phone, or an escalation to a live collector when needed. This way, collectors focus only on the accounts where a human actually moves the needle.
AI reduces DSO for 99% of companies that adopt it, and 75% report a reduction of 6 days or more. For a $100M-revenue business, six days of DSO which is equivalent to roughly $1.6M in freed working capital.
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4. Accelerate Cash Application Work
DSO doesn’t stop when the payment arrives — it stops when the payment is applied. Manual cash application work includes matching remittance data to open invoices, and it can sit for days, especially when:
- Payments arrive with partial remittance information,
- Payments are split across multiple channels (lockbox, ACH file, virtual card, wire)
- Short pays are received (partial payments that don’t cover the entire amount owed)
Faster cash application means payments show up as paid in your ERP system the same day they hit the bank. Billtrust’s Cash Application automation software uses machine learning and AI matching engines to apply payments in near real time, across payment types, even when remittance data is unstructured or arrives separately. A storage solutions company digitally transformed their process, reducing 20+ hours of manual cash application work to 10 minutes. They also achieved a 96% card payment automation rate.
McPherson Oil reached 98% touchless payment processing and a 26% DSO reduction.
5. Sharpen Credit Decisioning to Lower Risk
You cannot collect funds efficiently from customers who should never have received a line of credit in the first place. If DSO is climbing, part of the answer may sit upstream in how credit decisions and allocations get made.
Modern credit management automation software pulls external credit data, internal payment history, dispute records, and predictive risk scoring to make decisions about applications in minutes with a wider variety of data inputs when compared to traditional decisioning. That means smarter credit allocations, faster onboarding for low-risk customers, and tighter terms for high-risk ones.
One building products distributor automated credit routing and decisioning, which contributed to a 31% decrease in delinquency and a 56% revenue increase. Credit and collections share the same impact on DSO, and automating both produces compounding results.
6. Add a Self-Service Buyer Payment Portal
Customers often need to pay an invoice, request a copy, raise a dispute, or update their payment methods, but any friction points in those actions can cause a delay in payment. Every phone call or email exchange with your AR team adds days to the timeline.
A self-service B2B customer payment portal removes that friction. Buyers can log in, see every invoice and its status, pay in their preferred method, set up autopay, raise a dispute, and get the information they need to save money on their bills.
Billtrust’s Buyer Payment Portal is unique because it calculates early-pay discounts, guides buyers on the methods that avoid card surcharging fees and displays optimal payment timing based on the supplier’s active payment policies. When AR teams aren’t fielding customer questions about payment discounts and when those windows close, they can save a significant amount of time.
Sunstate Equipment went live with a new buyer payment portal in 64 days and hit 80% electronic payments in the first month with 24/7 invoice access for their buyers.
7. Build AR Analytics into Your Cash Flow Management Workflow
Most AR and treasury teams are managing their cash flow by running aging reports pulled weekly from their ERP system. But that’s like looking through the rearview mirror rather than looking out the windshield. Delinquencies are surfaced only after they have aged into a worse bucket.
Real-time AR analytics changes cash flow management posture from reactive to predictive. Dashboards surface risky buyer payment behavior on a daily basis, flagging at-risk accounts and root causes of DSO increases as they happen. Predictive analytics, drawing on payment-pattern data, pinpoint accounts drifting toward delinquency before they cross the cross the aging threshold. Visibility is the difference between explaining last quarter’s DSO to the CFO and actively managing next quarter’s working capital.
“Before Billtrust, cash flow management was like putting together a puzzle where some of the pieces have gone missing.”
– Director of Financial Services, Werner
Take a tour of Billtrust’s 13-week cash flow forecasting capabilities here.
How AR Automation Reduces DSO: Real Numbers
Across Billtrust’s customer base, the combined impact of automating the AR lifecycle shows up consistently in the numbers:
- Kinepolis: 13-day DSO improvement, 20% decrease in overdue invoices
- McPherson Oil: 26% DSO reduction, $2M increase in cash flow, 98% touchless payment processing
- WORLDPAC: 27-day DSO, 80% ePayment increase in three months
At the platform level, IDC’s independent analysis found an average ROI of 384% for customers using Billtrust’s solutions. This payback is driven largely by working-capital gains from lower DSO. Industry research shows the average DSO reduction is 41%.
Peak Industrial cut DSO by 47% and reduced its AR balance by 50% after automating across invoicing, payments, surcharging, cash application, and collections.
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Measuring Your DSO Improvement Progress
The right DSO reduction strategies produce measurable results, but it helps if you’re tracking more than just the DSO headline number. These metrics can offer additional context into why DSO problems are happening or why they might be persistent”
- Days to Pay (DTP): how long customers actually take, separate from any billing delays on your side
- Collections Effectiveness Index (CEI): how much of what is collectible you are actually collecting
- Aging bucket trends: the 90+ days bucket in particular, as it is the leading indicator of bad debt risk
- Digital adoption rate: both electronic invoice delivery rates and electronic payment rates
- Touchless payment rate: the share of payments applied without human intervention, similar to cash application match rate
Don’t miss the Guide to the 20 Best KPIs for AR and this simple periodic table of AR performance metrics, which makes it easy to understand how metrics should work together as a formula for cash flow optimization.
A practical cadence is a monthly DSO and CEI review with the CFO, a weekly aging-bucket review with the AR team, and a real-time dashboard collectors use daily. If the DSO number in the board deck is the only figure anyone tracks, issues surface too late to act on them in the same quarter.
Ready to Close Your DSO Gap?
Every day you shave off DSO is working capital returned to the business. Billtrust’s credit-to-cash platform is a total solution for cash flow management, covering invoicing, payments, cash application, collections, and credit. It’s built to compress DSO across the full AR lifecycle.
See what a reduced DSO looks like for your business. Book a 15-minute solution tour.
