Dunning is the unglamorous engine room of getting paid: the steady series of reminders that turns an overdue invoice into a settled one. Dunning software runs that series for you, sending each message on schedule, getting firmer over time, and handing you only the accounts that genuinely need a human.
This guide ranks six tools UK and international businesses shortlist in 2026: Paidnice, Chaser, Satago, Kolleno and Upflow, plus where Xero's free reminders fit. We judged them on the thing that actually decides recovery: how well they design and run the dunning sequence, not how many logos sit on the marketing page.
The best dunning software in 2026, ranked
Paidnice is the best-value dunning software in 2026 for businesses on Xero or QuickBooks: it runs multi-step, multi-channel sequences, escalates from a gentle nudge to a posted final notice, and adds UK late fees automatically, all on flat published pricing with a 5-star Xero App Store average. Chaser is the stronger pick for a finance team that wants deep control of the workflow and built-in credit reporting. The right choice depends on how complex your sequences need to be and who runs them.
The ranked shortlist:
- Paidnice: best value; multi-channel sequences, escalation and automatic late fees.
- Chaser: deep workflow control and Companies House credit reporting.
- Satago: dunning plus Experian credit risk and invoice finance.
- Kolleno: AI-assisted dunning inside a full AR platform.
- Upflow: analytics-led dunning for scaling B2B teams.
- Xero reminders: the free baseline, until its limits start to bite.
A dunning sequence is an escalation ladder, not one repeated email.
How we judged each tool
Good dunning is a process, not a single email. We weighed each tool on the parts of that process that decide whether an invoice gets paid:
- Sequence design. How many steps, how finely you can time them, and how much the wording can change as the account ages.
- Escalation. Whether the tone and the action step up sensibly, from a reminder to a fee to a final notice.
- Channels. Email at least, ideally SMS and posted letter, all sent from your own identity.
- Recovery extras. Late fees, payment plans and links that make paying the easy option.
- Accounting fit. A live two-way link to Xero or QuickBooks so the sequence stops the moment an invoice is paid.
- Pricing and reviews. Transparent pricing and what verified users actually report.
Most tools send reminders. The ones worth paying for design a sequence that escalates, recovers fees, and never chases an invoice that has already been paid.
What a good dunning sequence looks like
The tools below differ most in how their sequence behaves over time. A weak one sends the same email five times. A strong one opens gently, firms up at one week, attaches a late fee at two to three weeks, and closes with a final notice before escalation, switching channel where it helps.
Two design choices separate the field. The first is whether reminders go from your own domain, which lands better and reads as you rather than a shared address. The second is whether the sequence can recover the UK statutory interest you are owed, instead of leaving it in a spreadsheet.
Where Paidnice goes further
Paidnice is the one tool here that both sends from your domain across email, SMS and posted letter and applies UK statutory interest automatically, indexed to the Bank of England base rate plus 8% and recalculated as the rate moves. That turns the last step of a sequence from a polite ask into an actual recovery.
Flat, repeated reminders
- The same message every time
- Easy to tune out
- No sense of consequence
- Customers learn to wait
Escalating dunning
- Tone rises at each step
- Adds a fee when it bites
- Switches channel to get a reply
- Changes payer behaviour
Why escalation works where a repeated nudge does not.
Dunning software compared at a glance
| System | Best for | Channels | Escalation and fees | Accounting fit | Pricing | Reviews (source) |
|---|---|---|---|---|---|---|
| Paidnice | Value-focused SMBs | Email, SMS, posted letter | Yes, plus automatic UK statutory interest | Xero, QuickBooks | Flat, published from $69/mo | 5★ avg, Xero App Store |
| Chaser | Mid-market finance teams | Email, SMS | Workflow-based, flat-rate fees | Xero, QuickBooks, Sage | Tiered / quote | 4.9★ Capterra, 4.4★ G2 |
| Satago | Credit-risk-led teams | Reminders, with credit scoring | Xero, QuickBooks, Sage | Tiered / quote | Verified, Capterra | |
| Kolleno | Mid-market and enterprise | Email, portal | AI-assisted, full AR workflow | Via integrations | Per user / quote | Verified, G2 |
| Upflow | Scaling B2B teams | Email, portal | Analytics-led workflows | Xero, QuickBooks, NetSuite | % of revenue / quote | 233 reviews, G2 |
Ratings and feature availability are drawn from public sources as of June 2026 and change over time. Follow each linked source for the current figure.
The same sequence on a timeline, from pre-due to handoff.
Paidnice
Best valueBest for: businesses on Xero or QuickBooks that want a full dunning sequence, fees and all, on flat pricing.
Paidnice runs the whole sequence from one place: a gentle pre-due nudge, firming reminders by email and SMS, a posted letter for the customers who ignore email, and a late fee attached at the point it bites. Every step is routed by customer group, so loyal accounts get a soft touch while persistent late payers get the full ladder.
Its edge in a dunning comparison is the close of the sequence. Where most tools stop at a reminder, Paidnice raises the UK statutory interest you are owed automatically, keeping the rate indexed to the Bank of England base rate plus 8%.
Dunning strengths
- Multi-step sequences across email, SMS and posted letter from your own domain.
- Customer groups, so each segment gets its own cadence and tone.
- Automatic UK late fees and statutory interest at the end of the ladder.
- Payment plans and links that make settling the easy option.
- Safe Mode to trial a sequence before a single message goes out.
What reviewers say
Paidnice holds a 5-star average across the Xero App Store and Capterra, and won the 2025 Xero Global Small Business App of the Year.
Pricing
Flat and published from $69 per month, unlimited users, with a free trial and a sign-in-with-Xero setup.
Chaser
Best for: mid-market finance teams that want fine control of the dunning workflow.
Chaser is a long-standing name with deep, customisable chasing workflows and a shared workspace for a team to run dunning together. Its differentiator is UK credit reporting through Companies House, which flags accounts heading for trouble before the sequence even starts.
Dunning strengths
- Highly customisable, scheduled sequences.
- A shared chasing inbox for a finance team.
- Companies House risk monitoring.
What reviewers say
4.9 on Capterra and 4.4 on G2, with praise for setup and chasing quality.
Where it fits
Excellent on workflow control; late fees are a flat rate you maintain rather than one indexed to the base rate.
Satago
Best for: teams that want dunning alongside credit checks and finance.
Satago pairs reminders with Experian-backed credit scoring and invoice finance, so you can judge risk before extending terms, not just chase after the fact.
Dunning strengths
- Automated reminders and chase letters.
- Experian credit scores and suggested limits.
- Invoice finance inside the tool.
What reviewers say
Verified as a time-saver on Capterra, with strong Sage integration.
Where it fits
On the Basic plan, reminders send from Satago's own address; your own domain needs the higher tier.
Kolleno
Best for: larger teams that want AI-assisted dunning inside a full AR platform.
Kolleno folds dunning into a wider receivables, payments and reconciliation platform, with AI drawing data from accounting systems and ERPs and newer AI agents handling follow-ups.
Dunning strengths
- AI-assisted follow-ups and a customer portal.
- Payments and reconciliation in one place.
What reviewers say
Ranked among top finance products on G2.
Where it fits
Per-user pricing makes it expensive for a small team chasing a modest ledger.
Upflow
Best for: scaling B2B teams that run dunning by the numbers.
Upflow treats dunning as a data exercise, layering analytics over your billing so you can see which segments respond and tune the workflow accordingly.
Dunning strengths
- Personalised automated workflows.
- Deep AR analytics and a branded portal.
What reviewers say
Strong satisfaction across 233 reviews on G2.
Where it fits
Best for reporting-led finance functions; lighter on hands-on UK fee enforcement.
Xero reminders (free)
Best for: simple, low-volume dunning straight from Xero.
Xero's built-in reminders are the free baseline. They send a short series of emails and suit a business with a few reliable customers.
Where it fits
No SMS or posted letter, one schedule for everyone, a five-reminder cap and no late fees. The day you hit a limit is the day a dedicated tool earns its place.
How to choose dunning software
Three questions narrow it quickly:
How complex does your sequence need to be?
If a couple of email reminders clears most of your ledger, you do not need an enterprise platform. If you need different cadences per segment, SMS, posted letters and fees, look at the tools built for a full ladder.
Do you want fees recovered, or just reminders sent?
A reminder asks for the money; an applied late fee changes behaviour. If you invoice other businesses, prefer a tool that raises UK statutory interest for you.
Who runs it day to day?
An owner wants set-and-forget; a finance team wants a shared workspace and reporting; a credit controller wants account-level depth.
For most small and mid-sized businesses, the answer is a tool that runs a full sequence, fits your accounting system, and recovers fees without manual maths.
Frequently asked questions
What is dunning software?
Dunning software automates the series of reminders that chase an overdue invoice to payment. It sends each message on a schedule, escalates the tone and the action over time, records every step, and stops the moment the invoice is paid, so a business collects without writing the same email five times.
Is dunning the same as credit control?
Almost. Dunning is the automated chasing itself, the sequence of reminders. Credit control is the wider discipline that also covers setting terms and checking customer risk before you invoice. In the UK the word dunning is rarer in everyday use, but the software does the same job.
What is the best dunning software?
For most businesses on Xero or QuickBooks, Paidnice is the best value, running multi-channel sequences with automatic UK late fees on flat pricing and a 5-star Xero App Store average. Chaser is the stronger pick for a finance team that wants deep workflow control and Companies House credit reporting.
Can dunning software apply late fees automatically?
Some can. UK businesses can charge statutory interest and a fixed fee on overdue B2B invoices. Tools with fee automation calculate and raise it for you; Paidnice goes further and keeps the rate pinned to the Bank of England base rate plus 8% automatically.
Does dunning software work with Xero?
The good ones connect natively, syncing invoices and payment status two ways so a sequence ends the instant an invoice is paid. Paidnice, Chaser, Satago, Kolleno and Upflow all integrate with Xero.
The bottom line
Every tool here will send a reminder. The difference is what the sequence does after that: whether it escalates across channels, whether it recovers the fees you are owed, and whether it ever wastes a customer's patience by chasing an invoice that is already paid.
Chaser leads on workflow control and credit reporting, Satago on credit risk, and Kolleno and Upflow on AI and analytics for larger teams. For most small and mid-sized businesses on Xero or QuickBooks that want a full, fee-recovering sequence on flat pricing, Paidnice is the best-value dunning software in 2026.
Sources and further reading
- GOV.UK: charging interest on commercial debt
- Xero App Store: invoice reminder and AR apps
- G2: accounts receivable software category
- Capterra UK: credit control and debt collection software
Review scores and feature availability are accurate to the best of our knowledge as of 25 June 2026 and may change. This article is published by Accounting.Events, powered by Paidnice.
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