If you have ever typed “Your sincerely” at the bottom of a job application or formal email and hit send — you are not alone. This tiny mistake appears everywhere, from school assignments to professional cover letters. But it does matter, and fixing it takes less than five seconds once you understand the rule.
This guide clears up the confusion once and for all: which form is correct, when to use it, how it compares to “Yours faithfully,” and what mistakes people make without realising it.
Yours Sincerely or Your Sincerely: The Short Answer
“Yours sincerely” is always correct. “Your sincerely” is always wrong.
The difference is one letter — the “s” at the end of “yours.” That single letter changes the entire grammatical meaning of the phrase. “Yours” is a possessive pronoun (like his, hers, theirs). “Your” is a possessive determiner (used before a noun, like “your bag” or “your opinion”). Since no noun follows in this sign-off, “your” simply does not work here.
✅ Correct: Yours sincerely
❌ Incorrect: Your sincerely
The Grammar Rule Behind “Yours Sincerely”
The phrase “Yours sincerely” is a shortened version of a much older sentence: “I remain, yours sincerely.” That original sentence is grammatically complete. The word “yours” functions as a standalone pronoun meaning “belonging to you” — referring to the letter writer who belongs, sincerely, to the recipient.
When the phrase was shortened over time, “yours” stayed because it carries the grammatical weight of the closing. “Your,” on the other hand, needs a noun after it to make sense. You cannot write “I remain, your sincerely” any more than you can say “I am your.”
Key grammar point:
| Word | Type | Used correctly in |
| Yours | Possessive pronoun | “This is yours.” / “Yours sincerely” |
| Your | Possessive determiner | “This is your bag.” / “Your opinion matters.” |
That is the rule. It does not change based on context, formality, or country.
Where “Yours Sincerely” Comes From
Letter closings did not always look this clean. In earlier centuries, writers ended correspondence with elaborate phrases reflecting social hierarchy — things like “I remain, your most obedient and humble servant.” These closings were sincere expressions of deference, not mere formalities.
As literacy expanded and business communication grew faster, writers needed shorter, neutral closings. “Sincerely” fit that need perfectly — it expressed genuine intent without submission. By the nineteenth century, “Yours sincerely” had become standard in both personal and professional British correspondence.
American English simplified letter etiquette further, flipping the word order to “Sincerely yours” while British English retained the original “Yours sincerely.” Both carry the same meaning and intent.
Also Read This: Is It Correct to Say “Aforementioned”? A Complete Guide to Usage, Grammar, and Alternatives (2026)
When to Use “Yours Sincerely”
Use “Yours sincerely” when you know the name of the person you are writing to. This is the core rule in British English and remains the standard across formal professional writing globally.
Use “Yours sincerely” when your letter or email opens with:
- Dear Mr. Ahmed
- Dear Ms. Johnson
- Dear Dr. Patel
- Dear Karen Smith
- Dear James
If you have addressed the person by name — surname, full name, or title with surname — close with “Yours sincerely.”
Examples of correct formal letter endings:
Dear Mr. Thompson,
Thank you for taking the time to review my application. I look forward to hearing from you.
Yours sincerely,
Sarah Collins
Dear Ms. Rivera,
Please find enclosed the documents requested at our meeting.
Yours sincerely,
David Park
Yours Sincerely vs Yours Faithfully
This is where many writers — even experienced ones — get confused. Both are formal closings, but they apply to different situations.
| Situation | Opening Used | Correct Closing (UK) | Correct Closing (US) |
| You know the recipient’s name | Dear Mr. / Ms. [Name] | Yours sincerely | Sincerely yours |
| You do NOT know the recipient’s name | Dear Sir / Dear Madam / To Whom It May Concern | Yours faithfully | Yours truly |
The simple memory trick: Be sincere to people you know. Be faithful to strangers.
This rule is British in origin but widely taught in international English education, including IELTS, business writing courses, and formal correspondence guides. The Oxford Handbook of Commercial Correspondence supports this exact distinction.
What you cannot do:
- Start with “Dear Sir” and end with “Yours sincerely” ❌
- Start with “Dear Mr. Hassan” and end with “Yours faithfully” ❌
The opening and closing must match. Mismatching them signals either carelessness or unfamiliarity with professional writing norms.
US vs UK Usage Explained
There is a genuine difference between American and British conventions that trips up international writers.
| Feature | British English (UK) | American English (US) |
| Standard formal closing (name known) | Yours sincerely | Sincerely yours / Sincerely |
| Standard formal closing (name unknown) | Yours faithfully | Yours truly |
| Word order | Yours + sincerely | Sincerely + yours |
| Capitalisation | Only first word capitalised | Only first word capitalised |
| Punctuation after closing | Comma (optional in modern use) | Comma |
In American English, “Sincerely” alone — without “yours” — is also widely accepted and considered complete. Some grammar guides argue that without “yours,” the phrase is an incomplete sentence. Others disagree. For practical purposes, both “Sincerely” and “Sincerely yours” are standard in US professional correspondence.
“Yours faithfully” is uncommon in the US and may sound dated or overly formal to American readers. If you are writing to a US audience and do not know the recipient’s name, “Sincerely” or “Best regards” are safer, more natural choices.
Why People Keep Writing “Your Sincerely”
The mistake is understandable for a few clear reasons:
- It sounds the same when spoken. “Your” and “yours” are pronounced nearly identically in casual speech. The “s” blends into “sincerely.”
- Autocorrect does not always catch it. Many word processors do not flag “Your sincerely” as an error because both words are individually correct.
- People mimic what they see. If you have spotted “Your sincerely” in online templates or copy-pasted letters, that error gets reinforced through repetition.
- Grammar rules are not always taught explicitly. Many writers learn sign-offs by observation rather than instruction, so the underlying rule — possessive pronoun vs possessive determiner — never gets explained.
Understanding why “yours” is correct makes the rule stick far better than just memorising the phrase.
Common Sign-Off Mistakes to Avoid
Beyond the “your vs yours” error, several other closing mistakes appear regularly in formal writing:
| Mistake | Why It’s Wrong | Correct Version |
| Your sincerely | “Your” needs a noun after it | Yours sincerely |
| Yours Sincerely (both capitalised) | Only first word is capitalised | Yours sincerely |
| yours sincerely (all lowercase) | First word must be capitalised | Yours sincerely |
| Yours Faithfully when name is known | Mismatched with named salutation | Yours sincerely |
| Sincerely Yours (in UK writing) | Non-standard in British English | Yours sincerely |
| No closing at all | Abrupt; unprofessional in formal writing | Always include a closing |
Formal vs Semi-Formal vs Informal Sign-Offs
Not every message needs “Yours sincerely.” Matching your sign-off to the tone of the communication is just as important as grammar.
Formal (business letters, job applications, official correspondence):
- Yours sincerely (name known)
- Yours faithfully (name unknown — UK)
- Sincerely yours (US standard)
Semi-formal (professional emails, familiar colleagues, follow-up messages):
- Kind regards
- Best regards
- Warm regards
Informal (friends, family, casual messages):
- Best wishes
- Take care
- All the best
- Cheers (UK/Australian casual)
Using “Yours sincerely” in a casual message to a close friend reads as stiff and odd. Using “Cheers” in a job application cover letter is inappropriate. The sign-off sets the final tone of your communication.
Correct and Incorrect Examples
Formal letter — Correct:
Dear Ms. Chaudhry,
I am writing to express my interest in the Marketing Manager position advertised on your website.
Yours sincerely,
Omar Farooq
Formal letter — Incorrect:
Dear Ms. Chaudhry,
I am writing to express my interest in the Marketing Manager position advertised on your website.
~~Your sincerely,~~
Omar Farooq
Formal email to unknown recipient — Correct:
Dear Sir or Madam,
I would like to enquire about your company’s refund policy.
Yours faithfully,
Aisha Mahmood
Formal email to unknown recipient — Incorrect:
Dear Sir or Madam,
I would like to enquire about your company’s refund policy.
~~Yours sincerely,~~
Aisha Mahmood
Case Study: When Small Errors Cost Big Opportunities
A hiring manager reviewing two near-identical cover letters for the same position once shared this observation: both candidates had strong qualifications. One letter ended with “Your sincerely.” The other ended with “Yours sincerely.”
The grammatical error did not disqualify the first candidate outright — but it raised a quiet question about attention to detail. In roles requiring written communication, that question matters.
Professional writing works like body language. You do not notice it when it is right. You notice it immediately when it is wrong. A correct sign-off is invisible. An incorrect one lingers.
Why Correct Sign-Offs Matter More Than You Think
You might wonder: does anyone actually care about the closing phrase of a letter?
The answer depends on the context. In casual emails between colleagues, probably not. But in:
- Job applications — signals professionalism and literacy
- Legal or official correspondence — incorrect sign-offs can appear careless in documentation
- Client-facing communication — reflects brand and company standards
- University or scholarship applications — assessed against formal English writing criteria
- IELTS General Writing Task 1 — specifically tested; wrong sign-off loses marks
When the stakes are low, sign-off errors go unnoticed. When the stakes are high, they stand out. Writing correctly in every context costs nothing and risks nothing.
Quick Rules to Remember
- ✅ “Yours sincerely” — always correct. Use when you know the recipient’s name.
- ❌ “Your sincerely” — always wrong. “Your” needs a noun; there is none here.
- 🇬🇧 UK: Use “Yours faithfully” when you do not know the recipient’s name.
- 🇺🇸 US: Use “Sincerely yours” or just “Sincerely” for most formal letters.
- 📌 Only capitalise the first word: Yours sincerely — not Yours Sincerely.
- 📌 Follow with a comma, then your name on the next line.
- 📌 Match your closing to your opening — named salutation = sincerely; unnamed = faithfully/truly.
Conclusion
The difference between “Yours sincerely” and “Your sincerely” is grammatical, not stylistic. One is a possessive pronoun completing a shortened formal sentence. The other is a determiner that needs a noun to follow it — and none does. The correct phrase is always “Yours sincerely,” and it belongs at the end of any formal letter or email where you have addressed the recipient by name.
Beyond that core rule, matching your sign-off to your salutation — sincerely for named recipients, faithfully or truly for unnamed ones — rounds out professional letter etiquette. These are not arbitrary rules. They signal awareness, care, and competence to anyone reading your correspondence.
Small details, handled correctly, leave the right impression. This is one of the smallest and easiest to get right.
Ahmad is a passionate writer and digital content creator dedicated to sharing insightful, engaging, and informative articles across multiple niches. With a strong interest in technology, lifestyle, trending topics, and online media, Ahmad focuses on delivering well-researched and reader-friendly content that inspires and informs audiences worldwide.
