Best Invoice Reminder and Late Payment Tools (2026)

Chasing late invoices is one of those jobs nobody signs up for. You did the work, you sent the invoice, and now you're writing a third polite email asking where the money is. It's awkward, it eats time, and it's the first thing to slip when you're busy.

The good news is that most of it can be automated. Some tools chase for you by email, text or phone. Others are invoicing apps with reminders built in. I've looked at ten of them on their official websites and pulled out what each one says it does, who it seems to suit, and what to watch out for.

If you're still choosing your invoicing setup first, my invoicing software comparison is a good place to start. And if late payment is a regular problem for you, read how to prevent late payments too, because software only fixes half of it.

Two kinds of tool, and why it matters

Before the list, it helps to know which type you need, because they solve different problems.

• Invoicing apps with reminders: you create and send invoices in the app, and it nudges customers before or after the due date. This is usually enough for freelancers and small teams.
• Accounts receivable and credit control tools: these connect to the accounting software you already use and run a structured chasing process on top, often across email, text and calls. They suit businesses with lots of invoices or a finance person to run them.

Most of the tools below connect to Xero or QuickBooks, so you don't have to move your books to try one.

The tools

Chaser

Chaser is built around automated credit control. Its site describes payment chasing by email, SMS and automated phone calls, with an AI email generator to help write the reminders.

Who it suits: accountants, bookkeepers and businesses with a steady flow of invoices to collect.

What stands out: It goes well beyond reminders. The site also lists credit monitoring, payment prediction, a payment portal, payment plans and cash flow forecasting. It connects two ways with Xero, QuickBooks, Sage, Dynamics 365, NetSuite and SAP, among others, and there's a free trial.

Watch out for: it's a full accounts receivable platform, so a solo freelancer with a handful of invoices a month may not need most of it. Pricing isn't shown on the homepage, so check what fits before you commit.

Paidnice

Paidnice describes itself as accounts receivable automation that enforces your payment terms for you. Reminders go out by email, SMS and scheduled calls, and the emails come from your own domain.

Who it suits: small businesses and bookkeepers who run their books in Xero or QuickBooks Online.

What stands out: The scheduling is based on your customer's timezone and how they've engaged, which is a thoughtful touch. It can also apply late fees and interest, offer prompt payment discounts, set up payment plans, and send monthly customer statements. There's a branded payment portal and a free trial.

Watch out for: it connects with Xero, QuickBooks Online and Stripe, so if you use something else, check before you get excited. Automatic late fees are also a business decision, so think about how your customers will take them.

InvoiceSherpa

InvoiceSherpa focuses on automated invoice reminders. You can customise the messages, add text reminders, and pull invoices in from your accounting software.

Who it suits: agencies, consultants, law firms, accountants and any small business that sends invoices regularly.

What stands out: You can customise or switch off reminders at customer level or invoice level, which is handy for the client who always pays late but is worth keeping happy. It syncs with QuickBooks, Xero and Clio, has a customer portal, takes card and ACH payments, and offers a 14-day free trial with no credit card needed.

Watch out for: the integrations named on the site are QuickBooks, Xero and Clio. Check that your own software is on the list before you sign up.

Upflow

Upflow is an accounts receivable platform. Its collections agent handles outreach across email, SMS, calls, letters and tasks, and you can set how much control it has, from suggestions only to fully autonomous.

Who it suits: B2B finance teams, particularly in software and services businesses.

What stands out: The autonomy setting is the interesting part. You can start with it suggesting actions and let it run on its own once you trust it. It also offers a branded customer portal, cash application, and connects to QuickBooks Online, Xero, Stripe, HubSpot, Salesforce and more. The site says analytics access is free forever.

Watch out for: it's aimed at finance teams rather than one-person businesses. If you're a freelancer, it's probably more than you need.

Kolleno

Kolleno calls itself an AI-powered order-to-cash platform. It centralises your receivables data and automates the follow-ups.

Who it suits: CFOs, AR managers and credit controllers at growing companies.

What stands out: It covers a lot of ground: collections, cash application, a customer payment portal, disputes management, credit risk alerts, forecasting and e-invoicing. The site says it connects with more than 1,000 systems including NetSuite, QuickBooks, Xero and Sage.

Watch out for: it's built for finance teams. I couldn't see a free trial mentioned on the homepage, so you'd likely need to talk to them first.

Invoiced

Invoiced, now part of Flywire, is an accounts receivable automation platform. Its Smart Chasing uses AI agents to set collection cadences for each customer based on their past payment behaviour.

Who it suits: upper mid-market and larger businesses, though the site also names agencies and other service firms.

What stands out: The chasing adapts to the customer rather than sending everyone the same schedule. There's also automated dunning, a customer portal with AutoPay, cash matching, and native syncing with NetSuite, Sage Intacct, QuickBooks and Xero.

Watch out for: the site describes its ideal customer as upper mid-market and enterprise finance teams. That's a different world from a small business owner sending twenty invoices a month.

Xero

Xero includes automatic invoice reminders. Its site says it monitors your bank account to spot unpaid invoices and sends customers a reminder email for you.

Who it suits: small businesses that already keep their books in Xero and want reminders without adding another tool.

What stands out: You can set weekly reminders if you have longer payment terms, see when an invoice was sent and opened, and run an aged receivables report to see what's overdue. A Pay now button lets customers pay from the invoice, with card, GoCardless direct debit and Stripe options.

Watch out for: reminders are one feature inside accounting software, not a full chasing process. I didn't see phone chasing mentioned on the page, and some invoicing features vary by plan.

QuickBooks

QuickBooks can send automatic reminders to customers before and after an invoice is due. You control the message and the timing.

Who it suits: small businesses and freelancers who already use QuickBooks or want one place for invoices and books.

What stands out: It's simple. Set it up once and it handles the nudging, and the site says QuickBooks Payments matches a payment to the invoice automatically when customers pay by bank or card. Recurring invoices are available for repeat customers.

Watch out for: recurring invoices are only on the Essentials plan and above, so check your plan. Like Xero, this is reminders inside accounting software rather than a dedicated credit control tool.

FreshBooks

FreshBooks is invoicing software for small businesses, and its site mentions built-in late payment reminders so cash flow stays predictable.

Who it suits: freelancers, solopreneurs and small businesses with contractors or employees.

What stands out: It's friendly for freelancers. You can automatically add tracked time and expenses to an invoice, set up recurring invoices, take secure online payments, and there's a 30-day free trial.

Watch out for: the page I read describes reminders in a single line, so check how much control you get over timing and wording before you rely on it.

Zoho Invoice

Zoho Invoice sends payment reminders so you don't have to follow up by hand. It also handles one-time and recurring invoices.

Who it suits: freelancers, consultants and small agencies who want a free invoicing tool.

What stands out: The site says it's free, and commits to keeping it free and ad-free. Customers get a portal where they can view credits, approve quotes, pay invoices and download statements.

Watch out for: the reminder feature is described briefly, so it looks like a helpful extra rather than a full chasing system. If you have a lot of overdue invoices, you may outgrow it.

How I'd choose

Start with the size of the problem. If you send a few invoices a month and only the occasional one runs late, an invoicing app with reminders is plenty. Xero, QuickBooks, FreshBooks and Zoho Invoice all mention automatic reminders, so use the one that fits your books.

If you're regularly chasing a stack of overdue invoices, look at a dedicated tool such as Chaser, Paidnice or InvoiceSherpa. They connect to your accounting software and take over the chasing, and each one lists a free trial on its official site.

If you have a finance team and a lot of customers, Upflow, Kolleno and Invoiced are built for that scale. They're more about running a whole receivables process than sending a friendly nudge.

Whatever you pick, don't skip the basics. A clear invoice template with the due date and payment details stops a lot of late payments before they start. And when a client goes quiet anyway, my guide on how to handle a late-paying freelance client covers what to say and when.

Two things I'd test before committing. First, check the reminder tone. These emails go out under your name, so they should sound like you and not like a debt collector. Second, check that it connects to the accounting software you use today, because a tool that means double entry won't last.

Frequently asked questions

What is invoice reminder software?

It's software that automatically contacts customers about invoices that are due or overdue, so you don't have to chase by hand. Some tools do this inside an invoicing app. Others connect to your accounting software and run the chasing for you by email, text or phone.

Can I automate late payment reminders for free?

Some options say they have a free plan or a free trial on their official sites. Zoho Invoice describes itself as free, and Chaser, Paidnice, InvoiceSherpa and FreshBooks each mention a free trial. Check the current terms on each site, because they can change.

Do automated reminders annoy customers?

They don't have to. A friendly reminder before the due date and a polite one just after usually goes down fine, as long as the wording sounds like you. Tools that let you edit the messages and timing are worth choosing for that reason.

Is AI invoice chasing worth it for a small business?

It can be, especially if you're short on time, but it isn't essential. Several of the tools above describe AI features, and I've written more about AI invoice chasing if you want the detail. Start simple and add more automation only if late payments keep hurting your cash flow.

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