Retainer Invoice Template: Free + How Retainer Billing Works
Retainers are the holy grail of freelance income — predictable, recurring revenue every month. Here's how to invoice them correctly, and a free template to use.
What is a retainer invoice?
Monthly recurring
Billed on the same date each month. Predictable for you and for the client.
Reserved availability
The client pays to have your time available. Like a subscription to your expertise.
Stable income
The financial foundation most freelancers dream of — income you can plan around.
Retainer invoice requirements
Free retainer invoice template
Retainer payment terms
✅ Start-of-month billing (recommended)
- • Invoice on the 1st, due by the 7th
- • You have funds before work begins
- • Positions retainer as a subscription
- • Better cash flow
⚠️ End-of-month billing
- • Invoice on the last day, due Net 14
- • Easier to account for actual hours
- • Work done before payment received
- • Weaker cash flow position
Setting up recurring retainer invoices in Chaser
What to do when a client is late on retainer payments
Send immediately
Don't wait. Late retainer = danger signal for the relationship. Contact the day after the due date.
Have a direct conversation for repeat lateness
'To maintain our retainer arrangement, I need payment by the [5th] of each month. If that's difficult, let's talk about a different structure.'
Consider pausing deliverables
You have the right to pause work until the retainer is paid. State this in your agreement upfront so it's not a surprise.
Use Chaser for automated reminders
Chaser sends reminders automatically — removing the awkward personal dynamic from a reminder that might feel loaded in an ongoing relationship.
Automate your retainer invoicing
Set up once in Chaser. Monthly invoice sends automatically, reminders go out if unpaid, and you never have to think about it. That's what passive income actually looks like.
Try Chaser free →Frequently asked questions
What is a retainer invoice?
A retainer invoice is a monthly (or recurring) invoice for an ongoing service arrangement. The client pays a fixed fee each month in exchange for a defined amount of your time or a set of services. Unlike project invoices, retainer invoices recur on a schedule and reference the billing period rather than a specific deliverable.
Should I invoice at the start or end of the month for a retainer?
Start of month is strongly recommended. Invoicing in advance means you have funds before you do the work — better cash flow, and it positions your retainer as a reserved time commitment (like a subscription). End-of-month billing is easier to track against actual hours but leaves you waiting for payment while the work is already done. Most experienced freelancers invoice at the start of the month.
What should be on a retainer invoice?
A retainer invoice should include: reference to the retainer agreement, the billing period (e.g., 'April 2026'), what's included (hours, services, or 'as per retainer agreement'), the monthly retainer fee, any additional charges for out-of-scope work, and payment terms. Include a note about what happens if scope is exceeded.
What do I do if a client is late on a retainer payment?
Late retainer payments are higher stakes than one-off invoice payments because they affect an ongoing relationship. Send an immediate reminder — don't wait. If the client is consistently late, have a direct conversation: 'To keep the retainer arrangement, I need payment by the 5th of each month'. Consider pausing work until payment is received, or requiring payment in advance (auto-pay setup). Chaser's automated reminders handle the initial chasing professionally.
Can I charge more than the retainer fee if scope is exceeded?
Yes, but only if your retainer agreement specifies this. Your agreement should state: what the monthly fee covers (X hours or Y services), what rate applies for additional work ('Additional work beyond [X] hours billed at €[rate]/hr'), and how you'll communicate when scope is being exceeded. Without this in the agreement, charging extra is difficult to enforce. Invoice scope overages as a separate line on the same invoice or as a separate invoice referencing the variation.