Setting Up Recurring Billing for Retainer Clients (2026)

The dream client setup, ask any agency or consultant, is the same: a roster of paying retainers. Predictable monthly revenue, deeper relationships, less time spent selling. But setting up retainers is only half the battle. Billing them month after month — without forgetting, without errors, without awkward "did you get my invoice?" follow-ups — is the harder part.

Here's how to automate retainer billing end-to-end.

Why manual retainer billing breaks

Even with the best CRM, manual monthly billing fails in three predictable ways:

• You forget. The 1st of the month becomes the 5th. The 5th becomes the 12th. Your cash flow takes the hit.
• You make errors. Wrong amount, wrong PO number, missing VAT line. Each error costs 20–40 minutes to correct.
• You stop chasing. Late payments compound because you don't have time to chase, and clients learn they can pay late without consequence.

The 4-step recurring billing setup

1. Define the retainer terms in writing

Before you set up any automation, get the contract right. The retainer agreement should specify: monthly fee, billing frequency, billing date, payment terms (Net 7, Net 14, Net 30), included scope (hours or deliverables), overage rate, and notice period for cancellation. Without this, automated billing creates more problems than it solves.

2. Create a recurring invoice template

In ereQa, you create the first invoice manually — pick the client, add the retainer line item ("Monthly content retainer — August 2026"), apply VAT if relevant. Then click "Make recurring" and pick the frequency (monthly, quarterly, annually) and the day of the month. ereQa creates a template that fires automatically every period.

3. Set the billing date sensibly

Best practice: bill on the last business day of the previous month for the month ahead. So your client gets the invoice on August 31 for September work, with payment terms Net 7 (due September 7). This means cash arrives before you do the work — exactly what a retainer should do.

4. Layer on automatic reminders

Automate the chase. Reminders fire 3 days before due, on the due date, and 7 days after — without you doing anything. Most retainer clients never see a reminder because they pay on time. The few that need the nudge get it consistently and politely, without you having to be the bad guy.

Pricing models that work

• Flat monthly — simplest. ₦450k/month, every month. Best for predictable scope.
• Hours-banked — 30 hours per month at ₦20k/hour. Overage at ₦25k/hour. Good for ad-hoc work.
• Tiered — Starter (₦200k), Growth (₦500k), Pro (₦1M). Lets clients self-select.

Common pitfalls to avoid

• Forgetting to pause when a client cancels. Pause the recurring invoice the day notice is given.
• Mixing retainer and project invoices. Use separate invoice numbers and clear descriptions to avoid confusion at year-end.
• Not adjusting for inflation. Build a 5–8% annual increase into your contracts. Set a calendar reminder to update the recurring invoice each January.

What good automation looks like

You set it up once. Every month thereafter, the invoice generates, sends to the client (email + WhatsApp), gets paid via the embedded link, and ereQa marks it paid automatically. Your job is reduced to: review revenue once a month, decide if you want to take on more retainers.

That's the goal. Start free: Sign up here or read the full recurring billing feature page.