How to write a renewal changes letter to clients

Published 16 October 2026. Updated 16 October 2026.

A renewal letter that only says "your renewal is attached, premium is up 7%" leaves the client with a number and no understanding. A good letter tells the client what changed in the coverage, what that means for their business, and what they need to do. It is also a record that you flagged the change, which matters if there is a dispute later. This guide covers how to write one for a commercial account.

Start from a list of changes, not from the policy

Write the letter from your findings table, not by paging through the policy again. If you do not yet have one, how to compare policy wording at renewal describes how to build it, and the renewal policy changes checklist lists the categories to cover. For each change you want four things: what it is, where it is on both documents, what it means for this client, and whether they need to act.

The shape of the letter

1. Opening. One or two sentences: which policy, which term, and that the letter lists what changed from the expiring policy.
2. What needs the client's attention. New exclusions, reduced limits, higher deductibles and new conditions. These come first, because these are the ones a client could regret not knowing about.
3. Other changes. Broader cover, removed exclusions, and neutral wording changes, one line each.
4. The premium. The old figure, the new figure, the dollar difference and the percentage.
5. What you need from them. Questions to answer, decisions to make, a date to reply by.
6. A closing note. The letter is a summary, and the policy documents govern.

Write each change in plain words

Clients read the effect, not the clause. Compare these two versions of the same change.

• Weak: "An endorsement has been added to the policy."
• Better: "A new endorsement excludes claims arising from a communicable disease. The expiring policy had no equivalent wording. See renewal page 25."

The better version says what it does, says it is new, and gives a page. Keep sentences short and avoid carrier jargon unless the client uses it.

A few rules keep the letter honest:

• Describe what the document says, not what you predict will happen in a claim.
• If you recommend accepting, negotiating or marketing the account, put that in its own paragraph, so the client can tell what the documents say from what you advise.
• Do not promise that nothing else changed. Say what you compared, and what you could not read.

Handle figures carefully

Figures are where a letter loses trust. Use the numbers exactly as the documents print them, and work out differences once.

• Premium: expiring figure, renewal figure, difference in dollars, difference as a percentage of the expiring figure.
• Deductibles and limits: the old and new figure, and the basis (per claim, per occurrence, aggregate, percentage of a value).
• A deductible that moves from a dollar amount to a percentage of a value should be explained with an example in the client's own numbers, not only restated.

If a figure cannot be compared because the basis changed, say so rather than forcing a comparison.

State a limit in the words the policy uses. Write "$2,000,000 general aggregate", not "$2,000,000 a year": how an aggregate runs over time, and whether it applies per project or per location, is set by the form, and a letter is the wrong place to paraphrase it. The same goes for "per claim" and "per occurrence": copy the basis the document prints.

Include the page references

For every change, give the page in the expiring policy and the page in the renewal. A reader who wants to check can go straight to the sentence. It also gives you a trail if the client later says they were not told.

Say what you did not read

If any part of the documents could not be read, say so in the letter, and say what you are doing about it. For example: "Pages 40 to 44 of the renewal were scans, and are being checked separately." A gap you name is what lets the client trust the rest.

Avoid the usual traps

• A letter so long that the one important change is on page four.
• Letters that call every change "minor" without explaining.
• Copying the carrier's summary of changes without checking it against the wording.
• Sending a letter before you have read the draft yourself, start to finish, as the client would.
• Giving legal conclusions. Describe the change, and where the client needs advice, say that they should ask a lawyer.

A skeleton you can reuse

Re: Commercial general liability renewal, term beginning [date].

We compared your expiring policy with the renewal. These changes need your attention: [list]. Other changes: [list]. Your premium moves from [old] to [new], a difference of [amount] ([percent]). Please reply by [date] with [questions or decisions].

This letter summarizes the documents. The policy documents govern.

Fill each bracket from the findings table, then read the letter once as the client.

How RenewalRedline does this step

RenewalRedline drafts the client letter for you from the comparison it produces. After code lists the forms added, removed, edited or unchanged and an AI model lists each change with a quote and page in both documents, the letter is assembled from a plain-language sentence the AI model writes for each change, plus figures that code computes. No model does the arithmetic, and the changes are ordered by tag, starting with added exclusions. Code checks each sentence: one that states a figure the quotes do not print, or a period the quotes do not state (such as "per year" for an aggregate limit), is flagged, and a flag the second model does not clear is marked in the letter.

The letter is a Word file, a draft for you to read, edit and send under your own name. Nothing is sent to your client. A change that still needs your read is marked in the letter, and the letter closes by saying it is drafted from what the two documents say and is not legal advice or a coverage opinion. A second, stronger AI model reviews every result, fixes what it can, and lists what is left for you to decide. Results are model output checked by code and by a second model; they are not verified by a person. Read the letter against the change list before it goes out.

The same zip holds a change list (PDF) with the page citations, a change table (CSV) and the full result (JSON). A renewal costs 25 credits, with no subscription. Sign up and upload the expiring policy and the renewal to get a first draft.

Questions

How long should a renewal changes letter be?

As long as the changes require and no longer. A renewal with two changes needs a short letter. Put the changes the client must act on first, and keep the rest to one line each.

Should the letter quote policy wording?

Quote only where the exact words matter, such as a new exclusion. Otherwise describe the change in plain language and give the page, so the client or a lawyer can read the original.

When should the letter go out?

As soon as your comparison is done, early enough that the client can ask questions and you can go back to the carrier before the renewal date. A letter that lands the day before renewal leaves no time to act on it.