A retainer agreement that defines the fixed fee, what's included, what happens to unused hours, and how either side can exit without drama.
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What's happening here
A project agreement is built around a finish line. A recurring engagement doesn't have one — and that changes everything about how the contract needs to be structured.
You're providing (or receiving) ongoing services month over month — accounting, marketing, IT support, legal advisory, content creation, or maintenance. The relationship is ongoing, the fee is recurring, and the scope of what's included needs to be clear.
Without a retainer agreement, every month becomes a renegotiation. What's included in "marketing support"? What happens when you ask for a third blog post in a month that only covers two? Do unused hours roll over or expire? These questions have expensive answers if you haven't defined them in advance.
Scope creep across months, not just projects. Fee disputes when work slows down. Difficulty ending the relationship because there's no notice period. Clients who stop paying and claim the work wasn't what they expected. All preventable with a retainer that defines the terms clearly.
The right agreement for this situation
The best structure depends on whether the engagement is hour-based, output-based, or availability-based. Each shapes the contract differently.
Standard retainer
Fixed monthly fee in exchange for a set number of hours. Defines the included hours, what counts against the retainer, the overage rate, whether hours roll over, and the cancellation notice period. The most common structure for advisory, accounting, and ongoing professional services.
Output-based retainer
Fixed monthly fee for a defined set of deliverables — 4 blog posts, 1 monthly report, 8 social media posts. Scope is defined by output, not hours. Better for content, SEO, design, and other work where hours are hard to predict but deliverables are clear.
Availability-based retainer
The client is paying for priority access and guaranteed availability — not a specific number of hours or deliverables. Common for legal advisory, executive coaching, and on-call technical support. The fee buys priority access; actual work beyond a threshold is billed additionally.
What BizDraft asks you
The fixed monthly amount and when it's due. Is it billed in advance (beginning of month) or in arrears (end of month)? BizDraft drafts the payment terms to match.
Hours, deliverables, or availability? The scope definition is the most important clause in a retainer — it determines what's included, what isn't, and what triggers an overage.
Some retainers let unused hours carry over to the next month (up to a cap); others expire. This choice affects the financial dynamics of the engagement. BizDraft drafts whichever structure you choose.
The hourly or per-unit rate that applies when the client requests work beyond what the retainer covers. This clause prevents uncompensated overages and keeps the billing relationship clean.
Typically 30 or 60 days. Either side may want to end the retainer, and the notice period protects the service provider from sudden loss of recurring revenue and the client from abrupt service loss.
A minimum commitment period before either side can exit (e.g., 3 months minimum) gives the service provider enough runway to deliver results and the client enough time to evaluate. BizDraft includes an initial term if you specify one.
What to watch out for
A retainer that doesn't define what's included invites the client to treat it as unlimited access. Define explicitly what work is covered, what requires a separate scope, and what constitutes an overage — even for trusted long-term clients.
A retainer without a defined cancellation process creates a relationship that's hard to end cleanly. Clients can just stop paying. Service providers can just stop showing up. Define the process: notice period, final deliverables, final invoice.
Hours-based retainers require tracking to be enforceable. If you're claiming overage charges, you need records. BizDraft's retainer agreement includes a reporting obligation — the service provider provides monthly time summaries.
A retainer locked at today's rate for three years benefits the client, not the service provider. Include a rate review clause — typically allowing a fee adjustment once annually with 30-day notice — so the retainer remains commercially viable as costs rise.
Example
What you tell BizDraft
"I'm a social media consultant. Monthly retainer of $3,500 covering 20 hours of work. Unused hours expire monthly (no rollover). Overage at $175/hour. 30-day cancellation notice. 3-month minimum. I invoice on the 1st, payment due by the 15th. Illinois."
What BizDraft generates
A retainer agreement with $3,500/month fee, 20-hour inclusion, expiring hours (no rollover), $175/hour overage rate, monthly time summary requirement, 3-month initial term, 30-day cancellation notice, 1st-of-month invoicing, 15th payment due, late fee clause, Illinois governing law.
Download options
Word and PDF. All terms editable inline. Reusable across multiple retainer clients — just update the party names and fee for each one.
Frequently asked questions
A service agreement is typically project-based with a defined end. A retainer is ongoing with a recurring fee. The key retainer-specific clauses — rollover, overage rate, cancellation notice — don't exist in a standard service agreement.
Expiring hours are simpler to manage and better for service providers (the fee is earned regardless of usage). Rolling hours create goodwill and are preferred by clients, but can create an accruing liability. Capping rollover at one month is a common middle ground.
3 months is a common minimum for most retainers. It gives you enough time to demonstrate value without locking the client in for too long. For retainers that require significant upfront work (onboarding, setup, strategy), 6 months is reasonable.
You can — if your agreement includes a pause clause. BizDraft can include a pause provision that allows either party to suspend the retainer for a defined period (typically 1–2 months, once per contract year) without triggering the full cancellation process.
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