Chasing an unpaid invoice without damaging the client relationship

July 7, 2026 · By the Maroc SAAS team · 14 min read

An unpaid invoice puts many SME owners in an uncomfortable position: chasing it means risking upsetting a client you spent months winning; not chasing it means financing your client at your own expense. The good news is that this dilemma is false. A professional reminder — courteous, regular, in writing — doesn't destroy the relationship: it clarifies it. This guide gives you the complete method, the 4-step amicable reminder sequence, ready-to-copy message templates, and the way to automate all of it so you never again depend on your memory.

Why invoices drag on (on both sides)

Understanding why an invoice isn't paid is already knowing how to chase it. In the vast majority of cases, a client's late payment isn't a hostile decision: it's a mix of disorganization, tight cash flow and internal approval circuits. On the client's side, the most frequent causes are mundane:

• The invoice got lost. Sent to the wrong address, caught in the spam folder, or received by someone who isn't the person who pays. Nobody "refused" it — nobody saw it.
• The approval circuit is slow. In somewhat structured companies, the invoice has to be matched to the purchase order, approved by a manager, then scheduled for payment. Each step can take a week.
• Cash flow is tight. The client pays those who follow up first. An invoice never chased mechanically sinks to the bottom of the pile.
• A detail is blocking. A missing reference, an amount that doesn't match the quote, a missing ICE: the client is waiting for you to fix it, but doesn't think to tell you.

And let's be honest: part of the delays come from the business itself. An invoice sent three weeks after the work ended, with no clear due date, no bank details, then never followed up because "we don't want to insist"… is an invoice you made late yourself. SME payment delays degrade first there: in vagueness and silence. Everything that follows aims to remove that vagueness — first upstream, then with a reminder sequence that runs on its own.

Preventing non-payment from the quote onwards

The most effective reminder is the one you won't have to send: half of amicable collection is won before the invoice is even issued. Three reflexes change everything.

Write the payment terms on the quote. Payment period (on receipt, 30 days…), accepted payment methods, and any deposit: all of it must appear in black and white on the quote the client accepts. A client who validated "40% on order, balance at 30 days" discovers nothing at payment time — and your reminder rests on a written commitment, not a discussion. In LeCRM, notes and terms are entered directly on the quote, and an accepted quote converts into an invoice in one click, line items and VAT included — we detail the whole journey in our quotes, proposals and invoices guide.

Ask for a deposit. For any work that spans time or any significant order, a 30 to 50% deposit is the norm, not an exception. It filters out clients who never really intended to pay, funds your kickoff, and reduces the amount at risk. A serious client is never offended by it.

Make paying easy on the invoice itself. Every invoice must carry an explicit due date (it's what triggers the automatic reminders) and the means to pay without calling you: the bank details displayed directly on the PDF for transfers, and if you accept cards, an online payment button on the invoice (in Morocco, via the CMI gateway for local cards or PayZone for recurring payments in MAD) — the payment then records itself automatically. The easier it is to pay you, the less you'll have to chase.

The 4-step amicable reminder sequence

The sequence that works fits in one sentence: a courteous reminder 3 days after the due date, a firm follow-up at day 15, a call at day 30, then an arrangement if the client really can't pay all at once. Each step has its tone, its channel and its objective — and each stays within the register of amicable collection: you assume good faith, you make paying easier, you keep a written trace.

Step 1 — day 3: the courteous reminder. Three days after the due date, a short message that starts from the assumption it's an oversight. The goal isn't to demand: it's to put the invoice back in front of the right person, with everything needed to pay.

Subject: Invoice no. 2026-041 — past due date

Hello [First name], unless we're mistaken, invoice no. 2026-041 for 18,400 MAD, due on June 30, hasn't reached us yet. You'll find it attached with our bank details. If our messages have simply crossed, please ignore this one — and thank you for your trust. Best regards, [Your name]

Step 2 — day 15: the firm (but still cordial) follow-up. Two weeks after the due date, the tone shifts slightly: you no longer assume an oversight, you ask for a date. That's the key question of any effective reminder letter — not "can you pay?" but "when are you paying?".

Subject: Follow-up — invoice no. 2026-041, 15 days overdue

Hello [First name], despite our reminder of July 3, invoice no. 2026-041 (18,400 MAD, due June 30) remains unpaid to date. Could you confirm it has been scheduled for payment and give us a settlement date? If something is blocking on your side (reference, internal approval), let us know: we'll fix it within 24 hours. Regards, [Your name]

In Morocco, double this email follow-up with a WhatsApp message — it's often the one that gets read, and the one that unblocks things:

Hello [First name] 👋 A quick reminder about our invoice no. 2026-041 (18,400 MAD), due June 30. Could you confirm a payment date? I'm resending the PDF with our bank details right here. Thank you!

Step 3 — day 30: the phone call. At a month overdue, writing has shown its limits: you need a conversation. Call the person who decides on payment (not necessarily your usual contact), stay factual and aim for a precise commitment: an amount and a date. Always end the call with a confirmation email — "As agreed on the phone, you're settling 18,400 MAD by bank transfer by August 15" — which turns the spoken word into a written trace.

Step 4 — the arrangement or payment plan. If the client acknowledges the debt but can't pay in one go, a payment plan beats a standoff: three dated instalments beat a vague promise. Formalize it in writing, with precise dates and amounts, and an immediate first instalment — that's what tests the sincerity of the commitment:

Hello [First name], following our conversation, here is the agreed schedule for invoice no. 2026-041 (18,400 MAD): 6,400 MAD on receipt of this message, 6,000 MAD on August 15, 6,000 MAD on September 15. Please confirm your agreement by return. Each instalment will be confirmed with a receipt. Regards, [Your name]

Each payment — full or partial — is then recorded from the invoice in LeCRM ("+ Payment" button): the status automatically moves to Paid or Partially paid, a receipt can go out to the client, and you track the schedule without a spreadsheet on the side.

Automating reminders without thinking about it

The real problem with manual reminders isn't the tone — it's regularity: you follow up when you think of it, which means too late and not always. The solution is to hand the first two steps of the sequence to the machine, and keep the human for the call and the negotiation.

In LeCRM, manual reminders exist (a "Send reminder" button on the overdue invoice, with an adjustable message), but the real strength is in the automatic ones. In Setup → Settings → Cron job → Invoices, you set two options: the delay of the first reminder after the due date (0 for the same day, 3 for our sequence) and the resend interval for the following reminders. Reminders then go out at a fixed time, all by themselves — the only condition is that your invoices carry a due date. Result: every late-paying client receives a polite, regular reminder, without any team member having to think about it, and without the awkwardness of "having to ask for money".

Two common-sense settings: don't set a resend interval that's too short (a reminder every 2 days annoys more than it gets paid — 7 days is a good rhythm), and if no reminder goes out, check that the automated tasks are active and that the invoice actually has a due date.

The next level up is multichannel: doubling the email with a WhatsApp reminder, the channel where decisions really get made in Morocco, with a 98% open rate. The invoice link or PDF can be shared directly over WhatsApp from LeCRM, and automated messaging scenarios go further still — we dedicated a complete guide to messaging automations for SMEs to them. For recurring activities (subscriptions, maintenance, rent), the recurring invoice closes the loop: the invoice regenerates at each cycle and can send itself — no more invoices issued late, so fewer invoices paid late.

Good-faith client or bad payer?

The same reminder sequence doesn't suit every debtor: before hardening the tone, you have to diagnose who you're dealing with. Three profiles cover most cases.

The disorganized good-faith client always pays, but late: a mislaid invoice, slow internal approval, an overloaded accountant. With them, the reminder is a service, not a conflict. Make their life easier: systematically resend the PDF with the bank details, identify the person who actually pays (and add them to the contacts on the client record), and let the automatic reminders do the work. It's the most common profile — and the one automation solves almost entirely.

The client with cash-flow trouble would like to pay but can't, at least not right away and not all at once. The sign that sets them apart: they respond, they acknowledge the debt, they propose (or accept) dates. With them, the payment plan is your best tool — an immediate first instalment, written dates, receipts at each payment. And for the relationship going forward: a higher deposit and a capped outstanding balance, until their situation recovers.

The bad payer, on the other hand, plays for time as a system: they don't respond, dispute a different detail at every reminder, promise without ever committing to a date. The signals are unmistakable — total silence after three written reminders, commitments broken twice in a row, late disputes over work accepted without reservation. With them, you no longer "remind", you set the frame: everything in writing, no new work before the account is settled, and escalation to the formal step (see below) without hesitation. The client relationship worth protecting is the one with clients who pay — not with a debtor who never intended to.

A clean history makes this diagnosis instant: when all a client's invoices, reminders, promises and partial payments are visible on their record, the difference between a one-off late payment and recurring behaviour leaps off the screen — and your decision (payment plan or formal notice) rests on facts.

Tracking your receivables and DSO simply

Two numbers are enough to steer your unpaid invoices: the outstanding balance (how much you're owed, today, in total) and the DSO (in how many days, on average, you get paid). No need for a financial controller — just up-to-date invoices in a single system.

Accounts receivable is the sum of invoices issued and not paid. If you can't give that number in ten seconds, that's the first problem to fix: you only chase well what you can see. In LeCRM, the invoice list filtered by status (Unpaid, Overdue, Partially paid) gives that number at a glance, client by client — and expected collections are tracked in the Treasury module.

DSO (Days Sales Outstanding, or average payment time) answers a simple question: how many days pass between issuing an invoice and collecting it? The simplified version is calculated in one line: (accounts receivable ÷ revenue incl. VAT over the last 12 months) × 365. A concrete example: 220,000 MAD outstanding against 1,500,000 MAD of annual revenue gives a DSO of about 54 days. If your terms say 30 days, you're permanently financing three weeks of cash for your clients.

The point of DSO isn't its absolute value, it's its trend: calculate it every month and watch whether it rises or falls. It's the indicator that automatic reminders bring down fastest — often by several days within the first months, simply because no invoice escapes the follow-up any more. Complete it with a weekly reflex: every Monday, ten minutes on the list of overdue invoices, sorted by age. Those crossing day 30 move to a phone call; the rest, the automatic reminders take care of.

When and how to escalate

When the amicable route is exhausted — three written reminders, a call, no date kept — it's time to formalize, and the first rung is called the formal notice. It's a letter that officially demands payment within a precise period, sent in a way that keeps proof (in Morocco, registered mail with acknowledgement of receipt is the standard). Concretely, it contains: the invoice reference and amount, a recap of the reminders already sent with their dates, the demand for payment within a clear period (8 to 15 days), and the statement that failing this, you reserve the right to start collection proceedings.

The formal notice has a double virtue. First, it unblocks a good share of cases on its own: the shift from cordial reminder to formal letter signals that you won't let it go, and many debtors pay at this stage precisely to avoid what comes next. Second, if the next step becomes necessary (collection through a professional, an order for payment), it constitutes the opening piece of the file — along with your invoices, the accepted quote and the written history of your reminders. This is where the discipline of the earlier steps pays off: a file where every reminder is dated and traced in the CRM comes together in an hour; a file reconstructed from memory, never.

Two common-sense rules to finish. Never threaten what you won't do: a formal notice followed by nothing discredits you for all the following ones. And do the economics before going further: for small amounts, an accepted payment plan often beats proceedings; for significant amounts against a solvent debtor who refuses to pay, get support from a collection professional or a lawyer — every situation has its specifics, and this guide is no substitute for legal advice.

Frequently asked questions

When should the first reminder for an unpaid invoice go out?

From day 3 after the due date — not before (you'd look anxious), not weeks later (the delay settles in). This first reminder is courteous and assumes an oversight: it simply puts the invoice back in front of the client, with the PDF and bank details attached. The simplest approach is to automate it: a reminder scheduled 3 days after the due date goes out for every overdue invoice, without exception and without you thinking about it.

How do I chase a client without upsetting them?

By staying factual, courteous and regular. A professional reminder never says "you're not paying"; it says "invoice no. X, due on [date], remains open — could you give us a settlement date?". The automatic reminder has a real psychological advantage: the client understands it's the system reminding everyone the same way, not you singling them out. A serious client doesn't take offence at a polite reminder; they get organized.

What if the client doesn't respond to any reminder?

Change channel, then change level. After two email reminders with no response, double up with a WhatsApp message (often read when the email isn't), then call — looking for the person who decides on payment, not just your usual contact. If the silence persists after the call, send a formal notice by registered mail with acknowledgement of receipt, with a clear period of 8 to 15 days. And keep a written trace of every step: it's your file if things turn formal.

Should I accept payment in instalments?

Yes, if the client acknowledges the debt and the schedule is written, dated and started immediately. Three instalments honoured beat a frozen receivable — and the first instalment, collected the day of the agreement, tests the sincerity of the commitment. Record each partial payment on the invoice (the status moves to Partially paid and a receipt goes out to the client): tracking stays clean, and at the first missed instalment, you see it immediately.

You now have everything you need: prevention from the quote onwards, the 4-step amicable sequence with its templates, automatic reminders that chase on your behalf, and the two numbers to track each month. The difference between an SME chasing its cash and an SME paid on time is almost never firmness — it's the system. LeCRM sets it up in an afternoon: invoices with a due date and bank details, automatic email and WhatsApp reminders, payments tracked in real time — try it at lecrm.ma.