Outstanding invoices & payment terms Reminders & demand letters DSO & cash flow

Custom accounts receivable software

Appfront builds custom accounts receivable software that keeps track of outstanding invoices and payment terms, sends automated reminders and chasers, records payment arrangements and steers your DSO and cash flow. A payment profile per customer with a risk assessment, integrated with your accounting or ERP and with iDEAL or payment links, and clear dashboards. That way you get paid sooner, with less manual work and without damaging customer relationships. For finance departments, SMEs, wholesalers and service providers who want control over their working capital.

What is accounts receivable management software?

Accounts receivable management software supports the entire process around your outgoing invoices: monitoring open items and payment terms, automating reminders and demand letters, recording payment agreements, analysing the ageing of receivables and steering cash flow. Everything serves one goal: getting paid sooner and keeping control of your working capital, with less manual work and without harming customer relationships.

Off-the-shelf packages often force your way of working into a fixed mould. Receivables management, however, differs greatly from one organisation to another: in reminder schedules, payment terms, customer segments and the role account managers play with difficult customers. Custom software fits your process rather than the other way around, and can grow as your organisation or administration changes. That prevents shadow administration in loose spreadsheets and keeps the receivables file complete and traceable.

This page covers accounts receivable management up to the debt collection stage: monitoring, reminding and chasing. The actual debt collection process falls under separate software for building a debt collection system. Want a broader view of what's possible? See our approach to building software.

One file per customer

Invoices, payments, reminders sent, agreements and contact moments in one coherent receivables file. Whoever calls about an outstanding item sees the full history immediately, without re-keying data from separate systems.

Demand letters as a workflow

Open items automatically move through your reminder schedule: from a friendly reminder to a final demand, with deadline monitoring. Follow-up happens consistently, while you keep control over tone, timing and exceptions.

Steering by the numbers

DSO, ageing analysis and cash flow forecasts in clear dashboards. You see immediately where the risk lies and which items take priority, so you manage on figures rather than gut feeling.

How we build your accounts receivable management software

We work step by step and involve your finance team early on. From a thorough discovery of your invoicing and chasing process and the integrations required, through to go-live and ongoing maintenance, every step is aimed at software that your accounts team understands, trusts and uses gladly every day.

1
Discovery & scope

We map out your process: invoicing, payment terms, your dunning schedule, payment arrangements, customer segments and the integrations with accounting, ERP and payment methods. Together we determine which functionality matters most.

2
Design

We design the data models for open items, payment profiles and ageing, the dunning workflow and the dashboards, plus the approach for integrations, authorisation and logging.

3
Build & iteration

We build in short iterations with automated testing and monitoring. You see working versions along the way and help set priorities and fit with the daily practice of your administration.

4
Go-live & management

Controlled go-live with data validation and a safety net, followed by ongoing management, monitoring and further development as your way of working or your customer base changes.

What our debtor management software actually does

We tailor every application to your process, payment terms and customer segments. Below are the features we most often deliver for organisations that want to manage their debtors tightly and in a customer-friendly way.

Keeping track of open items

An up-to-date overview of all outstanding invoices, with due date, payment term and status for each item. Incoming payments are matched automatically, so your accounts always show the correct outstanding balance per customer.

Reminders & demand letters

Your dunning schedule, automated from a friendly reminder through to a final demand with an increasingly firm tone. The software determines which step is due and sends it automatically, with the invoice and a payment link attached. You can deviate or intervene manually per customer or segment.

DSO & ageing analysis

The software calculates your DSO and groups outstanding items into ageing buckets, from not yet due to well past the due date. This shows you straight away where money is tied up and which receivables should take priority in follow-up.

Payment profile & risk

For each customer, the software builds a payment profile based on payment behaviour, with a risk assessment. You can see which customers consistently pay late and which are reliable, and tailor your approach accordingly: softer where possible, firmer where necessary.

Payment arrangements & payment links

For customers who cannot pay in one go, you record a payment arrangement with instalment amounts and due dates, which the software monitors automatically. Payment links via iDEAL or a payment service provider make it easy for your customers to pay with a single click.

Cash flow dashboards

Aggregated management information on outstanding balances, expected incoming payments, DSO trends and the effectiveness of your follow-up. This supports decisions on working capital and alerts you early when cash flow is coming under pressure.

Who we build debtor management software for

Debtor management matters wherever goods or services are supplied on account, but the emphasis differs by organisation. For each profile, we build software that suits the scale, the invoice flow and the customer relationships you work with.

Finance departments

Accounts receivable administrations and finance teams that want to automate follow-up and steer on DSO and cash flow. The software takes over the repetitive work and gives the team an overview and time for the customers who genuinely need attention.

Wholesale

Wholesalers with high invoice volumes, tight margins and supply on account. Strict due date monitoring, ageing and payment profiles help you spot late payers early and keep working capital under control, even at large volumes.

Service providers

Service providers working with project invoices, partial payments and long-term relationships. The software accounts for longer客户 relationships and lets account managers stay informed, so follow-up remains customer-friendly. Combine this with a custom CRM for a single view of each customer.

SMEs invoicing on account

Small and medium-sized organisations that want to professionalise their debtor management without a heavy ERP project. A clear environment that connects to your existing bookkeeping and fits the work of your financial processes.

Not yet sure about a large project?

Test your idea first: a working prototype in 1 day

With OneDayBuild, we turn your idea into something tangible in one day for €1,150, so you can see whether further development is worth the investment. Decide to go ahead with the full build? Then we credit the full cost.

Explore OneDayBuild →

Technology and integrations

We build with a modern, maintainable web stack and integrate with your existing systems where needed. For debtor management, the most relevant are: an integration with your accounting or ERP system for customers, sales invoices and the open items list, a bank integration for reconciling incoming payments, and payment links via iDEAL or a payment service provider. We set up each integration in the direction and frequency that suit your bookkeeping, so that the general ledger and the debtor balance stay in line.

If you use Vrendly and invoice from your own system, there is our page on a Vrendly integration.

If you use Payt and want invoices and payments from your own system, there is our page on a Payt integration.

If you use CreditDevice and want invoices and payments from your own system, there is our page on a CreditDevice integration.

If you want to know when a customer moves, changes director or is deregistered, see our page on a Chamber of Commerce integration.

Want to know before delivery whether a customer is still within their credit limit? Then see our credit limit monitoring software.

Do you finance your invoices through factoring and want your administration to match the factor's? Then see our factoring administration software.

Node.js / Python / PHP / .NET React / Vue front end PostgreSQL / SQL database REST & web service integrations Accounting & ERP integration Bank integration & reconciliation iDEAL / payment service provider SEPA / payment files Email & document generation OAuth 2.0 / SSO Role-based authorisation Audit logging Encryption in transit & at rest Automated testing Monitoring & alerting CI/CD pipelines

Why choose Appfront for your accounts receivable management software?

Appfront develops custom software and always begins with a thorough analysis of your process, payment terms and customer segments. Accounts receivable management needs to be technically sound, but it also needs to reflect the balance you seek between firm follow-up and maintaining customer relationships. We capture that balance in your reminder schedule and payment profiles.

We write clear documentation, so that your own team or a future supplier can understand and manage the software. No black box, but transparent code and clear agreements on integrations, authorisation, logging and management. This way you retain control over your financial systems.

You work with a dedicated point of contact who understands both the technology and the practice of accounts receivable administration. This keeps communication short, prevents misunderstandings and speeds up decisions when choices need to be made during the build.

See also our broader approach to custom software development and our page on software for the financial sector. Have questions? Get in touch with us.

  • Custom software tailored to your reminder schedule
  • Balancing firm follow-up with maintaining customer relationships
  • DSO, ageing analysis and cash flow in dashboards
  • Integration with accounting, ERP and payment methods
  • Payment links via iDEAL or payment service provider
  • Payment profiles and risk assessment per customer
  • Clear documentation your team can read and manage
  • A fixed point of contact, no account managers passed around
  • Ongoing maintenance and further development
  • A way of working aligned with your existing IT landscape

Security and privacy in accounts receivable management software

Accounts receivable management processes personal data and payment data of your customers: names, contact details, invoices, payment behaviour and bank details. That is why we build in privacy by design and data minimisation from the architecture stage. We set up authorisation based on role and necessity, so employees only see the data they need for their work, and we record access and changes in a complete audit trail.

We build with encryption in transit and at rest, secure integrations with banks and payment service providers, and in line with the GDPR. Changes to customer and bank details can be placed under a four-eyes check as protection against fraud. We document data flows and authorisations, so that your record of processing activities stays complete and you can demonstrably stay in control.

If a receivable remains outstanding after a reminder, you can hand it over smoothly to the debt collection process. For that, we build separate software for custom debt collection development. Discuss your situation without obligation via our contact form.

  • GDPR-compliant data processing and data minimisation
  • Role-based access and least-privilege principles
  • Encryption in transit (TLS 1.2+) and at rest
  • Secure integrations with banks and payment service providers
  • Four-eyes control on customer and bank details
  • Complete audit logging of access and changes
  • Documentation for your record of processing activities
  • Monitoring and alerting on integrations and payments

Frequently asked questions about accounts receivable management software

Answers to the questions we are asked most often about custom accounts receivable management software.

Our accounts receivable management software supports the entire process around your outgoing invoices: tracking open items and payment terms, automating reminders and payment chasers, recording payment arrangements, analysing the age of receivables and steering your cash flow. Custom software lets you set this up around your own dunning schedule, payment terms and customer segments, rather than forcing your way of working to fit a standard package. The aim is that you get paid sooner, with less manual effort and without damaging customer relationships.

DSO stands for Days Sales Outstanding: the average number of days it takes for an invoice to be paid. It is a key figure for your working capital, as a rising DSO means money is tied up in outstanding receivables for longer. Ageing analysis, also known as aging, groups open items into time buckets such as not yet due, 30, 60 and 90 days past due. This shows you at a glance where the risk lies and which items need priority. The software calculates DSO and ageing automatically and displays them in dashboards, so you can manage by figures rather than gut feeling.

Yes. You define a dunning schedule that matches your policy: for example, a friendly reminder shortly after the due date, followed by one or more chasers with an increasingly firm tone. The software tracks open items, determines which step is next and sends emails automatically, with the invoice and a payment link included. You can vary this by customer segment or by individual customer, manually override steps and always see which communications have been sent. This ensures follow-up is consistent, while you stay in control of tone and timing.

We build custom software. Accounts receivable processes differ greatly between organisations: in their dunning schedules, payment terms, customer segments, the role of account managers with difficult customers, and how invoicing and bookkeeping are set up. Custom software fits your actual process and can grow with you as your organisation or administration changes. After an introductory meeting, we agree together which functionality matters most and in what order we build it, without promising a fixed timeline or price that we cannot yet substantiate.

Yes. Debtor management software rarely works in isolation. We integrate via API or file exchange with your accounting or ERP package to synchronise customers, sales invoices and the open items list, and to automatically reconcile incoming payments. For your customers' convenience, we add payment links via iDEAL or a payment service provider, so an outstanding invoice can be paid with one click. We align the direction and frequency of each integration with your bookkeeping, so that your general ledger and debtor balance stay in line.

For customers who cannot pay in one go, you record a payment arrangement or instalment plan with instalment amounts and due dates. The software monitors those instalments, automatically reminds the customer of an upcoming or missed instalment and shows the status in the customer record. In addition, the software builds a payment profile for each customer based on payment behaviour, giving you a risk assessment: which customers consistently pay late and which are reliable. You can use that profile to differentiate your approach, for example a gentler tone for loyal customers and tighter follow-up where needed.

Yes. Accounts receivable management matters wherever goods or services are supplied on account. A wholesaler with many invoices and tight margins benefits from strict due-date monitoring and ageing, while a service provider more often deals with project invoices, partial payments and longer relationships. For SMEs, we build a clear environment that connects to your existing accounting, without a heavy ERP project. Because we deliver custom software, we set it up for the size, sector and customer relationships that apply to your organisation.

This page covers debt management up to the collection stage: monitoring outstanding invoices, sending reminders and final demands, and arranging payment plans. The actual collection process, including amicable and legal collection, case management, integration with bailiffs and arrangements such as no cure, no pay, falls under separate software. We build custom software for that too. See our page on building collection software for this. Many organisations have both systems connected, so that an invoice that remains unpaid after a final demand is passed smoothly to the collection process.

Ready to build your debt management software?

Tell us how your debt management is set up and where you run into problems, from outstanding items and reminders to payment plans, payment profiles and cash flow. We are happy to think along with you about process, integrations and the balance between following up strictly and maintaining the customer relationship. In a no-obligation first conversation, you will get a clear picture of what custom software can do for your organisation.

Would you like to look at this challenge from the custom software side? On applatenmaken.com you will find a detailed overview of Building debt management software.

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