A good letter to a government agency is short, factual and easy to act on. Put your details and the agency's address at the top, then the date and a subject line with your reference or case number. Say in the first paragraph why you are writing, give the facts in a few sentences, state exactly what you are asking for, list what you enclose and sign it. One page is usually enough.
Information, not legal advice
This guide covers structure and tone. Many matters come with deadlines and rules about the form a reply must take (a specific form, an online portal, a signature). The letter or notice you received, or the agency's official website, tells you which apply. For legal questions, ask the agency, an advice service or a lawyer.
The format at a glance
| Part | What goes in it |
|---|---|
| Your details | Full name, address, phone or email |
| Date | The day you send it |
| Recipient | Agency name, department or office, mailing address |
| Subject line | What it is about, plus your reference, case or account number |
| Greeting | "Dear Mr./Ms. [Last name]," or "Dear Sir or Madam," |
| Opening | One or two sentences: why you are writing, which letter you are replying to |
| Facts | What happened, with dates, in the order it happened |
| Request | What you want the agency to do, and by when if there is a deadline |
| Closing | "Sincerely," then your name (in the UK, "Yours faithfully," is common after "Dear Sir or Madam") |
| Signature | Signed by hand on paper, typed name below |
| Enclosures | A list of every document you attach |
Template you can copy
Replace everything in square brackets. Delete lines you do not need.
[Your full name]
[Street address]
[City, state or region, postal code]
[Phone number] | [Email]
[Date]
[Name of the agency]
[Department or office]
[Mailing address]
Subject: [What this is about], [reference, case or account number]
Dear [Mr./Ms. Last name / Sir or Madam],
I am writing about [your letter dated ... / my application for ... / my account].
[Facts in two to four sentences: what happened, when, and what you have already done.]
I would like to ask you to [clear request]. [If there is a deadline: Your letter asks for a response by [date]. I am sending this letter on [date].]
Please contact me at [phone or email] if you need anything else.
Sincerely,
[Signature]
[Your full name]
Enclosures:
1. [Document]
2. [Document]
What to include (checklist)
- Your reference number. Quote the case, file, account or notice number from any letter you received. It is usually the fastest way for the office to find your file.
- The letter you are replying to. Name its date and, if it has one, its notice or letter number.
- Dates. When things happened, when you sent something, and any deadline the agency gave you.
- One request per letter. If you have two unrelated matters, write two letters.
- Enclosures. List every document so the agency can check nothing is missing. Send copies, keep the originals.
- Your signature. On a paper letter, sign by hand above your typed name.
- A copy for yourself. Keep the letter, the enclosures and any proof that you sent it.
Tone: formal, polite, specific
- Write in full sentences and keep them short.
- Stay factual, even if you are frustrated. Describe what happened instead of how it made you feel.
- Say what you want. "Please confirm that you received my documents" is easier to act on than "I hope this can be sorted out."
- Avoid slang, abbreviations only you know, and long background stories.
Replying to a letter or notice from an agency
A response letter follows the same format, with two additions: refer to the letter you received (its date and reference) in the subject line and the first sentence, and answer each point it raises in the same order.
Watch the deadline. The letter you received usually says by when and how to respond. As one example from the United States, the IRS says to "reply by the due date" to guarantee your appeal rights, and when you disagree to "Follow the instructions in the notice to dispute what it says" and to "Include information and copies of documents for us to review when we consider your dispute."
How to find the right address
Use the address printed on the letter you received. If you are writing first, take the address from the agency's official website, not from a search ad or a third-party site. Official directories:
- United States: USA.gov A to Z index of government agencies
- United Kingdom: GOV.UK list of departments, agencies and public bodies
- Other countries: your government's official portal
Example: from a spoken note to a finished letter
This example was written by us to show the idea. The names, numbers and agency are made up, and it is not real app output.
What you might say out loud:
Okay, so I need to write to the housing assistance office. They sent me a letter dated September 10, the reference is HA-2026-04417, and it says they didn't get my proof of income. But I did send it, I uploaded it on August 28, I have the confirmation email. Anyway, I'll send it again, the last three pay slips, June, July and August. The letter says I have to respond by October 1. Can they please confirm they got it and that my application is still going ahead. Oh, and I'll attach the upload confirmation too.
The finished letter:
Maria Santos
[Street address]
[City, postal code]
[Phone] | [Email]
September 25, 2026
Housing Assistance Office
[Mailing address]
Subject: Proof of income, reference HA-2026-04417
Dear Sir or Madam,
I am writing in response to your letter dated September 10, 2026, which states that you have not received my proof of income.
I uploaded these documents on August 28, 2026 and received a confirmation email.
As they may not have reached my file, I am enclosing them again.
Please confirm that you have received the documents and that my application is still being processed. Your letter asks for a response by October 1, 2026.
Sincerely,
[Signature]
Maria Santos
Enclosures:
1. Pay slips for June, July and August 2026
2. Upload confirmation email of August 28, 2026
The spoken note had all the facts, in the wrong order and with filler. The letter puts the reference in the subject line, the facts in order, the request in one sentence and the enclosures in a list.
Write it by voice with Retexta
If you find it easier to explain your situation out loud, Retexta, a cloud voice to text and AI writing app for Android, can turn that explanation into a formal draft:
- On the start screen, open More templates and choose Write to an institution.
- Under Which institution?, choose your country (or Other country) and the type of request.
- Speak your situation the way you would explain it to a friend: the office, the reference number, what happened, what you want.
- Retexta writes a draft. You can switch it to the format that fits: Email, Letter, Short request, or Next steps. If you want to speak in your own language and get the letter in another, set the Result language. Tone controls such as Formal set the register.
- Check the draft line by line before you send it. The app labels the result "AI-generated. Check important details." for a reason: names, dates and numbers must be right.
Write to an institution is part of Retexta Pro, as is the option Search the internet for current official information, which uses current official websites when local rules or office details matter. Retexta is free to try: new users get a few free Pro results to view in the app. Copying, sharing and exporting need Retexta Pro or credits, and so does everything after the free results.
Cover letters and application letters
Searches for a "cover letter to a government agency" or an "application letter to a government agency" are usually about applying for a job, not about writing to an office as a citizen. A job application follows the same polite, formal register but has a different structure: the role you are applying for, your relevant experience and why you fit. Check the job posting for what the agency wants you to send.
Related guides
Got a voice message about your paperwork and need it as text first? See how to convert a WhatsApp voice message to text. More about the app: Retexta, voice to text for Android.
Sources
Checked by FLAME Apps on September 25, 2026.
- IRS, Understanding your IRS notice or letter (page last reviewed or updated May 26, 2026).
- USA.gov, A to Z index of U.S. government departments and agencies.
- GOV.UK, Departments, agencies and public bodies.
- Retexta: goal, template and plan names as shown in the app and on its Google Play listing.
