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Templates / Contract

Free Fractional CFO Engagement Letter Template

A fractional CFO engagement letter covers the scope and cadence, payment terms, confidentiality, responsibilities, and how either side ends the engagement.

Fractional CFO Engagement Letter template preview

Language:

en

Last updated:

October 2026

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Cash can look fine on paper and still feel shaky week to week, especially when nobody’s sure what’s due, what’s already committed, and what decisions are waiting on clean numbers. A fractional CFO engagement letter puts the working agreement in writing so the owner knows what help is coming, what stays with the bookkeeper and CPA, and how the month-to-month retainer actually runs.

The opening makes the link to the accepted proposal and calls out the practical snags that trip finance work, like late closes and change orders, then the scope section keeps the work anchored to the proposal items and an agreed cadence. Payment terms cover the setup split, the monthly retainer invoicing, a 7‑day due date, and what happens when an invoice is past due. The letter also covers confidentiality, independent contractor status, who makes approvals, and how recommendations get explained in plain language, on rose-grey pages with Zilla Slab headings and a deep teal accept button.

  • This letter sits alongside the proposal Connects the engagement letter to the accepted proposal and defines the cadence, plus how late closes and change orders get handled.
  • What we do Ties scope to the proposal items, separates setup from the ongoing monthly rhythm, and prices out-of-cadence requests in writing before work starts.
  • Payment Defines the setup billing split, the monthly retainer invoicing, the 7-day payment window, and the pause on non-urgent work when invoices go past due.
  • Keeping things private Covers confidentiality for financials and access, and says what the client can keep when the engagement ends once invoices are paid.
  • Ending the engagement Explains written notice, paying for work completed, and the handoff of current cash forecast and reporting packs after the account is up to date.

What the document includes: theSections: Each section carries the wording you swap to match your names, dates, rates, and any differences in how you work, then you send the letter and the client signs online.

We went from spending hours on every proposal to creating fully customized ones in under 5 minutes. That's not an exaggeration - we timed it.

Yazan & Mawaheb
Yazan & MawahebAgency Owners

What to include in a fractional CFO engagement letter

PartWhat it covers

This letter sits alongside the proposal

Links the letter to the accepted proposal and describes the cadence and the practical issues that can derail finance work, like late closes and change orders.

What we do

Defines setup versus ongoing work, keeps bookkeeping and tax filing with the bookkeeper and CPA unless you agree otherwise, and confirms out-of-scope requests in writing before starting.

Payment

States the setup billing split, the monthly retainer invoicing, the 7-day due date, and what happens if an invoice goes past due.

Keeping things private

Covers confidentiality on both sides, plus what happens to access, files, and the working models when the engagement ends and invoices are paid.

How we are set up

Clarifies independent contractor status, separates recommendations from approvals, and explains how coordination with the bookkeeper, CPA, or bank gets authorized.

Monthly retainer rhythm

Explains month-to-month renewal, written notice to end the retainer, and using the notice window to close out work and hand off cleanly.

What we are responsible for

Commits to showing assumptions and calling out numbers that don’t tie, and limits responsibility for outcomes or for errors caused by missing or delayed inputs.

Ending the engagement

Covers notice and final payment, then includes a Signature so acceptance is documented before the handoff happens.

Who it is for

Fractional CFOs and finance operators who support owner-led companies and need a signed engagement letter before starting setup and a monthly retainer.

The contract in full

This letter sits alongside the proposal you accepted. Together they spell out what we are doing, how we will run the cadence, and how we handle the practical stuff that can trip up finance work like late closes, unclear requests, and change orders.

Our job is to help you stay on top of cash, margins, and next-step decisions without big-company noise. We will ask for only the information you already have and turn it into a weekly and monthly rhythm you can rely on.

What we do

Fractional CFO services under this engagement are the items listed in the accepted proposal, delivered on the cadence we agreed. The setup work covers the initial diagnostic and intake through a working cash forecast and reporting baseline, then we move into the ongoing monthly rhythm.

Bookkeeping and tax filing stay with your bookkeeper and tax CPA unless we agree in writing to add or change work. If you ask for something outside the agreed cadence, we will price it and confirm the scope and fee in writing before we start, so the work and the invoice stay aligned.

Payment

Setup work is billed 40% to start and 60% when setup is complete. Ongoing work is invoiced at the start of each month as a retainer. Every invoice is payable within 7 days of the invoice date.

If an invoice goes past due, we will flag it right away and pause non-urgent work until the account is current. We will still protect anything time-sensitive we have already committed to, like a scheduled lender deliverable, as long as we have the inputs we need and you are working with us to get payment caught up.

Keeping things private

We will treat what we learn about your business as private. That includes your financials, customer and vendor information, payroll-related details, lender terms, and anything we see in your accounting system or banking reports. We ask you to treat our working methods, templates, and internal documentation the same way.

When this engagement ends, you can keep and use the models and reporting packs we built for you once invoices are paid. If you want, we will also return or delete the access and files you provided, after we have a reasonable chance to download our work papers for our records and to support any wrap-up questions.

How we are set up

We work as an independent Fractional CFO team, not as your employees. That means we decide how we staff the work across our team, we use our own tools and systems, and we are responsible for our own taxes and insurance.

You control your business decisions and approvals. We will recommend actions, explain tradeoffs in plain language, and prepare the reporting you need for owners, banks, and investors, but you remain the decision-maker. If you need us to coordinate with your bookkeeper, tax CPA, or bank, you will make the introductions and authorize the information sharing.

Monthly retainer rhythm

Ongoing Fractional CFO services run on a month-to-month retainer. We invoice at the start of each month for that month’s work, and the engagement renews automatically each month unless one of us ends it.

Either side can end the monthly retainer by giving notice in writing. We will agree the notice period with you in writing, and we will use that window to close out open action items, hand off files cleanly, and avoid leaving you mid-cycle. Ending the retainer does not cancel any unpaid invoices or any work already completed.

What we are responsible for

We stand behind our work as finance operators. We will show our assumptions, keep models and reports consistent with the data we were given, and tell you when something does not tie out or does not smell right.

We cannot promise outcomes you control, like profit, fundraising, or bank approval, and we are not responsible for errors that come from missing, inaccurate, or delayed inputs from your systems or third parties. We also are not responsible for bookkeeping or tax filing work performed by others unless we agree in writing to take that work on.

Ending the engagement

Either side can end this engagement by giving notice in writing. We will agree the notice period with you in writing, and we will use it to wrap up the month in a way that leaves you with usable numbers and a clear next step.

You will pay for work completed up to the end date, including any setup milestone that has been delivered. After paid invoices are up to date, we will hand over the current versions of the cash forecast model, reporting packs, and any board or lender packages we prepared for you, along with a brief handoff note so your team can run with it.

Signature

Legal Notice: Please consult legal advice and carefully review the content of this contract template before implementing this template in your business.

Questions about this contract template

What should a fractional CFO engagement letter include?

A fractional CFO engagement letter usually covers the scope and cadence of work, payment terms, confidentiality, responsibilities and limits, and how either side can end the engagement. This template also ties the scope back to the accepted proposal and calls out how change orders get priced and confirmed.

Is an engagement letter the same as a proposal?

An engagement letter and a proposal do different jobs, even when they refer to the same work. The proposal holds the items and pricing you accepted, and the engagement letter confirms how the relationship runs, including cadence, payment timing, and boundaries around scope.

How do you handle work outside the monthly cadence?

Out-of-cadence work needs a scope and fee confirmed in writing before it starts, so the work and the invoice stay aligned. The template keeps bookkeeping and tax filing out of scope unless you add that work in writing.

What payment terms are typical for a fractional CFO retainer?

A common pattern is billing setup as milestones and invoicing the retainer at the start of the month. This engagement letter bills setup 40% to start and 60% on completion, invoices the monthly retainer at the start of each month, and sets invoices as payable within 7 days.

What happens if the client pays late?

The template says you’ll flag a past-due invoice right away and pause non-urgent work until the account is current. Time-sensitive deliverables you already committed to can still be protected if you have the needed inputs and the client is working with you to catch up payment.

What does the client keep when the engagement ends?

After invoices are paid, the client can keep and use the models and reporting packs you built during the engagement. The ending section also describes handing over current versions of the cash forecast model and reporting packs, along with a brief handoff note.

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