What it is
Late client information is the most common reason for missed deadlines and write-offs in busy season. A set sequence of letters keeps the tone measured, builds a record, and gives the client a fair chance to respond before the engagement is affected.
The series moves from a friendly reminder to a second notice that explains which work is blocked and what the schedule now looks like, to a final notice that sets out options the engagement letter supports. Each letter has an outstanding-items table you fill from your tracker.
When to use it
- Items on the PBC tracker pass their due dates.
- A tax client has not sent documents as the filing date nears.
- You need a record of requests and consequences before pausing work.
What’s inside
- Letter 1: friendly reminder with the outstanding-items table
- Letter 2: second notice with blocked work and a revised delivery window
- Letter 3: final notice with bracketed options for pausing work and invoicing time
- Optional paragraph on extensions for returns with a filing deadline
Standard cited
This template follows Firm practice. It is written in our own words, except for phrases the standard requires the document to contain, with [bracketed placeholders] for client details, amounts in USD and dates as MM/DD/YYYY. Check it against the current standard and your firm’s methodology before use.
Questions
When should each letter go out?
Letter 1 right after the due date, letter 2 about a week later, and letter 3 only after a call. Your engagement letter and the calendar decide the exact days.
Can we stop work if the client does not respond?
Only to the extent your engagement letter and the law allow, and not where stopping would harm the client in a way your obligations prohibit, such as a regulatory filing you have agreed to make. Get counsel’s view before sending a letter that mentions pausing or ending services. The template marks those options for deletion if they do not fit.
Why does the extension paragraph mention payment?
IRS guidance says an extension is for filing the return and that tax owed is still due by the original due date. A client who learns that from your letter is less likely to be surprised by penalties and interest.
Should the letters be emailed or mailed?
Email for the first two, with a call. Consider certified mail with email for the final notice if your policy calls for proof of delivery.
Related templates
- Client Information Request Letter
- PBC Tracker with Ageing (Excel)
- Client Disengagement Letter
- Engagement Status Tracker (Excel)
Last updated 11/05/2026. All free templates.