Free template

Free Tax Preparation Engagement Letter Template

This tax preparation engagement letter template names the returns and tax year in scope, sets the information deadline, handles extensions and uncertain positions, and records that the client reviews and authorizes the return before filing. Full text and download below.

In short

This tax preparation engagement letter template names the returns and tax year in scope, sets the information deadline, handles extensions and uncertain positions, and records that the client reviews and authorizes the return before filing. Full text and download below.

Last updated: September 2026

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What is included in this template?

  • The specific returns and tax year covered
  • The date by which information must be received to avoid an extension
  • Extension policy, including that an extension is not an extension to pay
  • Responsibility for the accuracy of information and for supporting documentation
  • Treatment of uncertain tax positions
  • Client review and e-file authorization before filing
  • Fees, including a rate for additional work such as amended returns and notices

When should you use it?

  • Annually, before each tax season, for every return client.
  • When adding entity returns to an individual engagement or vice versa.
  • Before starting an amended return, which should be its own letter.
  • Before any IRS or state notice response, which is representation work and outside a preparation engagement.

Section-by-section explanation

What each part is for, and the mistakes that show up most often when it is written badly.

Returns in scope

Name each return and the tax year: Form 1040 and the [STATE] resident return for tax year 2026, not 'personal taxes'. Multi-entity families need every entity listed, because the one that is missing is always the one that files late.

The information deadline

State the date by which complete information must arrive for the return to be filed by the original due date. This is the single most useful line in the whole letter.

Extensions

Set out that an extension may be filed where information is incomplete, that it extends the filing date and not the payment date, and that estimated payments are based on the information available.

Tax positions

Say that where a position is uncertain you will discuss it and the client decides. Record that the client is responsible for tax, interest and penalties assessed.

Review and authorization

Confirm that the client reviews the return and signs the e-file authorization before transmission. This closes the gap that causes most preparer disputes.

The full template

The complete text is below so you can read it before downloading. Replace everything in square brackets with your own details.

[FIRM LETTERHEAD]

[DATE]

[CLIENT NAME]
[CLIENT ADDRESS]

Dear [CLIENT CONTACT NAME]:

ENGAGEMENT LETTER — TAX RETURN PREPARATION, TAX YEAR [YEAR]

Thank you for engaging [FIRM NAME] to prepare your tax returns. This letter confirms the terms of the engagement.

1. RETURNS IN SCOPE
We will prepare the following returns for tax year [YEAR]:
  a. [e.g., Federal Form 1040 and accompanying schedules]
  b. [e.g., [STATE] resident income tax return]
  c. [e.g., Federal Form 1120S and Schedules K-1 for [ENTITY NAME]]
  d. [ADDITIONAL RETURNS]

No other returns, entities, states or years are included. Additional returns, including amended returns for any year, require a separate engagement and are billed separately.

2. SERVICES NOT INCLUDED
This engagement does not include: bookkeeping or the preparation of financial statements; payroll or sales tax filings; tax planning or projections; representation before the Internal Revenue Service or any state or local authority; responses to notices, examinations or audits; foreign reporting analysis beyond the forms listed in section 1; or any assurance service. We do not provide legal or investment advice.

3. INFORMATION DEADLINE AND EXTENSIONS
To file by the original due date, we must receive all requested information by [DATE]. Information received after that date may require an extension.

Where an extension is filed, you understand that an extension of time to file is not an extension of time to pay. Any estimated payment we calculate will be based on the information available at the time, and interest and penalties may apply to amounts ultimately due.

4. YOUR RESPONSIBILITIES
You are responsible for:
  a. the accuracy and completeness of all information provided, including all income from all sources;
  b. maintaining documentation supporting the items reported, including records substantiating deductions, business expenses, travel, meals, charitable contributions and basis;
  c. disclosing all foreign accounts, foreign assets, foreign income, virtual currency transactions and any other reportable interests;
  d. reviewing the completed return before it is filed;
  e. signing the e-file authorization before we transmit any return.

We will not audit or otherwise verify the information you provide, although we may ask for clarification.

5. TAX POSITIONS
Where the treatment of an item is uncertain, we will explain the alternatives and the associated risk, and you will decide the position taken. You are responsible for any tax, interest or penalty assessed by any authority.

6. FEES
Our fee for the returns listed in section 1 is [$[AMOUNT] / based on our standard rates of $[RATE] per hour]. The fee assumes records are complete and organized as described in section 4. Disorganized or incomplete records, late information, additional entities, additional states and revisions after the return is finalized are billed in addition at $[RATE] per hour.

Payment is due [ON DELIVERY / WITHIN [NUMBER] DAYS OF INVOICE]. We do not transmit returns until fees are settled, unless agreed otherwise in writing.

7. NOTICES AND EXAMINATIONS
If you receive a notice from any taxing authority, forward it to us promptly. Assistance with notices, examinations or appeals is a separate engagement, billed separately at $[RATE] per hour.

8. RECORDS RETENTION
We retain copies of returns and supporting workpapers for [NUMBER] years. You should retain your own copies and all underlying records for at least the period during which they may be examined.

9. CONFIDENTIALITY
We will not disclose your information except as permitted or required by law and professional standards, or with your written consent.

10. TERMINATION
Either party may terminate this engagement on written notice. Fees for work performed through the date of termination remain payable. If we have not received the information described in section 3 by [DATE], we may withdraw from the engagement and will notify you in writing.

11. ACCEPTANCE
Please sign and return a copy of this letter. We will not begin work until it is returned.

Sincerely,

_______________________________
[PARTNER NAME], [CREDENTIAL]
[FIRM NAME]

ACCEPTED AND AGREED:

_______________________________      ____________________
[TAXPAYER SIGNATURE]                  Date

_______________________________      ____________________
[SPOUSE SIGNATURE, IF JOINT]          Date

Download the editable copy

Enter your work email and the plain-text file downloads straight away. Have your own counsel review any engagement or disengagement letter before you send it to a client.

This template is a starting point, not legal advice. Have your own attorney and, where relevant, your insurance carrier review any engagement or disengagement letter before you send it to a client.

How Remindoo automates this

A template is a document. The reason firms still miss the thing the document describes is that nobody owns the follow-up. This is where software helps.

  • Send next season's letters as a batch from the client list, each with the correct returns and fee merged in, instead of rebuilding them one by one in December.
  • Track who has signed, so preparation never starts on an unsigned client.
  • Turn the information deadline in section 3 into an automated request with reminders, so chasing is systematic rather than personal.
  • Move a client into the extension path automatically when the deadline passes without complete records.

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Frequently asked questions

What should a tax preparation engagement letter include?

The specific returns and tax year, exclusions such as representation and bookkeeping, the information deadline, the extension position, the client's responsibility for completeness and documentation, how uncertain positions are handled, fees and the requirement to review and authorize before filing.

Do you need a separate letter for each entity?

Either name every entity and return explicitly in one letter, or issue separate letters per entity. What causes problems is a letter addressed to an individual that is assumed to cover their S corporation, partnership and trust returns as well.

Should the letter cover IRS notices?

It should exclude them and say so. Responding to a notice is representation work with a different risk profile and should be engaged separately when it arises.

Does an engagement letter have to be signed?

A countersigned letter is far easier to rely on if fees or scope are later disputed. Electronic signature is standard practice in US firms. Keep the executed copy with the client record rather than in an individual's email.

How often should engagement letters be reissued?

Annually for recurring services, and immediately whenever scope, fees or the responsible parties change. Reissuing yearly also gives you a clean moment to reprice work that has quietly grown.

Stop maintaining templates by hand

Remindoo turns documents like this into recurring work with owners, internal due dates and automatic client follow-up. Per client, unlimited users.