In brief: You stop chasing unpaid invoices by changing the system, not by writing better reminder emails. The system has three parts: fix the front door so problem invoices are rarer, automate collection so routine invoices pay themselves, and run a clear escalation ladder for the genuine exceptions.

Everything below is sequenced. Do it in order and each step makes the next one smaller.

Why chasing feels endless

Chasing is the symptom of a payment process that leaves the final action with the customer. They must notice the invoice, approve it internally, log into banking and send the money. Any broken link in that chain lands back on your to do list.

The causes vary: wrong recipient, missing purchase order, slow approvals, cash pressure, disputes, or plain forgetting. Each needs a different response, which is why generic reminders underperform. Diagnose first with our guide to why clients pay invoices late, then apply the system below.

Step 1: agree payment before the work starts

The cheapest moment to fix collection is during the sale, when goodwill is highest.

  • Put the payment term, method and due date trigger in the proposal and contract.
  • Capture the billing essentials upfront: legal entity, accounts payable contact, purchase order requirements, portal details.
  • For repeat customers, make automatic collection the default. One approved Direct Debit mandate covers every future invoice, fixed or variable.
  • Set a credit limit and decide in advance what happens when it is reached.

A customer who agrees the payment route before delivery almost never becomes a chasing problem afterwards.

Step 2: make the invoice impossible to stall

Many "late" invoices are simply unprocessable. Before sending, check:

  • correct legal name and billing address;
  • purchase order number where required;
  • clear description matching the agreed work;
  • correct VAT treatment;
  • a specific calendar due date, not just "net 30"; and
  • the agreed payment method stated plainly.

Send it the day the work completes, to the validated accounts payable contact, and confirm receipt. An invoice that cannot be queried removes the most comfortable excuse for delay.

Step 3: automate the routine collection

This is the step that actually ends chasing. For repeat invoice customers, collect by Direct Debit:

  1. The customer approves a mandate once, through a secure link.
  2. Each invoice supplies its own amount and due date.
  3. The customer receives the required advance notice.
  4. The collection is submitted through Bacs and settles on schedule.
  5. Payment status flows back to the invoice for reconciliation.

The customer stays protected by the Direct Debit Guarantee and keeps the right to cancel, but routine payment no longer depends on their memory or their banking app. Setting this up is straightforward; our guide to setting up Direct Debit for a business covers both routes.

For one off or urgent invoices, bank transfer or card may still fit better. The comparison in Direct Debit versus card versus bank transfer shows which method suits which job.

Step 4: automate the reminders you still need

Not every customer will move to automatic collection on day one. For the rest, remove the manual labour from reminders:

  • a receipt confirmation when the invoice is issued;
  • a courteous pre due check that the invoice has passed approval;
  • a due date notice; and
  • a firm overdue sequence with specific asks: the exact payment date and the reason for delay.

Connect reminders to your accounting data so they stop automatically when payment arrives. Nothing erodes credibility like chasing an invoice that was paid on Tuesday.

Step 5: run an escalation ladder, not a mood

For the exceptions that remain, escalate on a written process:

  1. Immediately overdue: ask precise questions. Has the invoice been validated? Is anything missing? Which payment run is it in?
  2. Seven to fourteen days: phone the payer, confirm a date in writing, and pause further credit if the contract allows.
  3. Persistently overdue: apply statutory interest and compensation where appropriate, require a deposit or automatic collection for future work, and reduce the credit limit.
  4. Seriously overdue: formal letter before action, Small Business Commissioner routes for larger customers, or professional recovery support. Take advice where needed.

The 2026 reform package strengthens your hand here, with mandatory statutory interest and new Small Business Commissioner enforcement powers phasing in. Use the leverage, but remember enforcement is the last rung of the ladder, not the strategy.

What this system changes in practice

Businesses that implement all five steps typically see the chase collapse into a short weekly exception review: a handful of genuinely stuck invoices instead of a debtor book of maybes. Cash forecasting starts from scheduled collection dates. The awkward customer conversations mostly disappear, because the payment conversation happened once, at the start, when it was easy.

The time saved is measurable. UK research puts average chasing time at 86 hours a year per affected business; we break down what those hours cost in how many hours businesses waste chasing invoices.

How NRTH runs steps 3 and 4 for you

NRTH connects Xero, QuickBooks or Sage with Direct Debit collection. Mandates, advance notices, scheduled collections and reconciliation run as one workflow, with failures surfaced for a human decision. Your team keeps the judgement calls. The software keeps the repetition.

Frequently asked questions

How do I get existing customers onto Direct Debit?

Ask, do not ambush. Explain the benefit: no payment dates to remember, advance notice of every collection, and Direct Debit Guarantee protection. Send a secure mandate link and make it the default for new work going forward.

Should I chase an invoice before it is due?

A polite pre due check is worthwhile for large or first invoices. Frame it as confirming the invoice is received, valid and scheduled, which surfaces approval problems while there is still time to fix them.

What if a customer refuses automatic collection?

Some will, and that is a data point. Apply tighter terms: shorter payment windows, deposits, or lower credit limits. A customer unwilling to commit to a payment process is telling you something about payment intent.

Does Direct Debit stop all late payments?

No. Collections can fail for insufficient funds or cancelled mandates, and genuine disputes still need resolving. It removes the memory and friction failures, which are the majority of routine late payments.

Better reminders make chasing faster. A better system makes it rare.

See how NRTH turns invoices into scheduled collections, or talk to the team.

Sources and further reading

Last reviewed: 21 July 2026. This is general operational information, not legal or financial advice.