Templates › Web Developer Retainer Agreement

Web Developer Retainer Agreement Template

Free template · reviewed by Riya Menon, Contracts writer, Signr · updated July 2026

A Web Developer usually reaches for a Retainer Agreement when for continuing work billed on a repeating monthly cycle. This free template does one job well: it sets recurring fees, an agreed scope and notice terms for ongoing monthly work. It is written for how web developers actually work — around a marketing site or web-app build with defined milestones, the familiar headache of endless post-launch bug reports being treated as free work, and getting paid on staged payments tied to milestones, often 30% up front and the rest on acceptance. Use a Retainer Agreement rather than something looser, because for a single fixed-scope project — use a service agreement instead. Edit any line to fit your rates and terms, then send it for e-signature in a couple of minutes — no account for your client, and it is legally binding under the ESIGN Act and eIDAS.

The Web Developer Retainer Agreement template

RETAINER AGREEMENT — WEB DEVELOPER

1. PARTIES
This Retainer Agreement ("Agreement") is made on ____________ between ____________ ("Client") and ____________ (the "Provider"), a Web Developer. Together they are the "Parties".

2. MONTHLY SCOPE
Each month the Provider will deliver the following for the Web Developer engagement: ____________. Work beyond this monthly scope is agreed in writing and billed separately.

3. FEES & BILLING CYCLE
The monthly fee is $____________, billed on the ____________ of each month. Standard terms for a Web Developer are staged payments tied to milestones, often 30% up front and the rest on acceptance.

4. HOURS / DELIVERABLES
The retainer covers ____________ hours or the deliverables listed above each month. Typical support for a Web Developer includes working, deployed source code and a live site.

5. ROLLOVER & OVERAGE
Unused hours do not roll over unless agreed in writing. Work beyond the monthly block — for example new pages, integrations or design changes added after the spec is signed off — is billed at $____________ per hour with prior approval.

6. TERM & NOTICE
This retainer runs month to month and renews automatically. Either Party may cancel with ____________ days' notice; the client pays for all milestones completed to date on termination.

7. IP & CONFIDENTIALITY
The Client owns the deliverables produced under this retainer once paid. Both Parties keep each other's information confidential, which for a Web Developer especially covers source-code ownership transferring only on final payment, plus third-party and open-source licences.

8. GOVERNING LAW
This Agreement is governed by the laws of ____________, and any dispute will be handled in the courts of ____________.

9. SOURCE-CODE OWNERSHIP
The Client owns the custom source code on full payment. Pre-existing libraries and the Provider's reusable components remain the Provider's, licensed to the Client for this project.

10. ACCEPTANCE
The Client has ____________ days to review the delivered working, deployed source code and a live site and report issues. If no issues are raised, the work is deemed accepted.

11. WARRANTY & FIXES
The Provider will fix genuine defects reported within ____________ days of delivery at no charge. Beyond that window, or for new pages, integrations or design changes added after the spec is signed off, work is billed as new.

12. THIRD-PARTY & OPEN SOURCE
The build may use third-party or open-source components under their own licences. The Client is responsible for any paid third-party services after handover.


SIGNATURES
Signed by the Parties on the date first written above. Both Parties keep a copy. An electronic signature is legally binding under the ESIGN Act and eIDAS.

Client: ______________________   Date: __________
Provider: ____________________   Date: __________

What to change before you send it

Clause by clause

Parties

This Retainer Agreement ("Agreement") is made on ____________ between ____________ ("Client") and ____________ (the "Provider"), a Web Developer. Together they are the "Parties".

Monthly Scope

Each month the Provider will deliver the following for the Web Developer engagement: ____________. Work beyond this monthly scope is agreed in writing and billed separately.

Fees & Billing Cycle

The monthly fee is $____________, billed on the ____________ of each month. Standard terms for a Web Developer are staged payments tied to milestones, often 30% up front and the rest on acceptance.

Hours / Deliverables

The retainer covers ____________ hours or the deliverables listed above each month. Typical support for a Web Developer includes working, deployed source code and a live site.

Rollover & Overage

Unused hours do not roll over unless agreed in writing. Work beyond the monthly block — for example new pages, integrations or design changes added after the spec is signed off — is billed at $____________ per hour with prior approval.

Term & Notice

This retainer runs month to month and renews automatically. Either Party may cancel with ____________ days' notice; the client pays for all milestones completed to date on termination.

IP & Confidentiality

The Client owns the deliverables produced under this retainer once paid. Both Parties keep each other's information confidential, which for a Web Developer especially covers source-code ownership transferring only on final payment, plus third-party and open-source licences.

Governing Law

This Agreement is governed by the laws of ____________, and any dispute will be handled in the courts of ____________.

Source-Code Ownership

The Client owns the custom source code on full payment. Pre-existing libraries and the Provider's reusable components remain the Provider's, licensed to the Client for this project.

Acceptance

The Client has ____________ days to review the delivered working, deployed source code and a live site and report issues. If no issues are raised, the work is deemed accepted.

Warranty & Fixes

The Provider will fix genuine defects reported within ____________ days of delivery at no charge. Beyond that window, or for new pages, integrations or design changes added after the spec is signed off, work is billed as new.

Third-Party & Open Source

The build may use third-party or open-source components under their own licences. The Client is responsible for any paid third-party services after handover.

Signatures

Signed by the Parties on the date first written above. Both Parties keep a copy. An electronic signature is legally binding under the ESIGN Act and eIDAS.

Common mistakes web developers make

No overage rule

Without one, new pages, integrations or design changes added after the spec is signed off eats the month for free. Price any work beyond the agreed block.

Rollover left unsaid

Decide up front whether unused hours carry over — silence is where arguments start for web developers.

No notice period

Set the notice to cancel so a client cannot drop a Web Developer mid-month, and confirm the client pays for all milestones completed to date on termination.

FAQ

When should a Web Developer use a retainer instead of a per-project contract?

When the work repeats every month rather than being a marketing site or web-app build with defined milestones with a clear finish line.

How do web developers usually bill a retainer?

On a monthly cycle, commonly staged payments tied to milestones, often 30% up front and the rest on acceptance. The template bills in advance so you are never working unpaid.

Is this Web Developer Retainer Agreement legally binding once signed?

Yes. Once you and your client sign it — including with an electronic signature — this Retainer Agreement is a binding contract under the ESIGN Act, eIDAS and similar laws in most countries.

What if a client asks a Web Developer for more than was agreed?

Point them back to the scope. Extra work such as new pages, integrations or design changes added after the spec is signed off is quoted separately — that is exactly what the written terms are for.

Can a Web Developer send this Retainer Agreement for signature online?

Yes. Paste it into Signr, drop the signature fields on, and send a link. Your client signs from any device with no account, and you both get a sealed, court-ready copy.

Send this as a signing link — free

Paste the template into Signr, drop signature fields on, and send. Your client signs from any device, no account needed, and you both get a sealed, court-ready copy.

Create your free agreement →

Related templates

Other contracts for web developers:
Web Developer Service Agreement templateWeb Developer NDA templateWeb Developer Work-for-Hire Agreement templateWeb Developer Deposit Agreement template
The same Retainer Agreement for other roles:
Graphic Designer Retainer Agreement templateCopywriter Retainer Agreement templateVirtual Assistant Retainer Agreement template
Read: e-signatures for web developers →