15-Point Business Document Proofreading Checklist: Catch Typos, Honorifics Errors, and Inconsistent Formatting

Why Business Document Quality Matters

A single typo, honorific error, or inconsistent formatting can undermine your professional credibility — and in some cases, damage client relationships. Building a systematic proofreading habit dramatically reduces these risks.

Use this checklist before sending any significant business communication.

The 15-Point Proofreading Checklist

Category 1: Basic Errors

✅ Check 1: Proper Nouns

• Are names spelled correctly? (People, companies, departments, titles)
• Is the company name in its official form (not abbreviated in formal documents)?

✅ Check 2: Dates, Numbers, and Amounts

• Is the day of the week correct for the date cited?
• Are numerical magnitudes correct (no digit errors)?
• Is currency formatting consistent (¥ vs. yen vs. JPY)?

✅ Check 3: Punctuation and Brackets

• Are all opening brackets matched by closing brackets?
• Are sentence endings properly punctuated?
• Is comma usage appropriate — not over-used or under-used?

Category 2: Formal Language and Honorifics

✅ Check 4: Avoid Double Honorifics

Double honorifics occur when two layers of respect language are stacked unnecessarily, sounding unnatural.

Incorrect (doubled)	Correct
おっしゃられた	おっしゃった
ご覧になられた	ご覧になった
お伺いさせていただく	伺います

✅ Check 5: Respectful vs. Humble Forms

• Respectful (尊敬語): For the recipient's actions (いらっしゃる, おっしゃる, なさる)
• Humble (謙譲語): For your own or your company's actions (おります, 申す, いたす)

Mixing these is a common and significant error in Japanese business writing.

✅ Check 6: Avoid Overusing "させていただく"

"させていただく" is a humble form meaning "I humbly do X with your permission." Using it for routine statements without a permission context sounds excessive.

• ❌「ご連絡させていただきます」→ ✅「ご連絡いたします」
• ❌「送付させていただきます」→ ✅「お送りいたします」

Proofreading CheckerDetect double-keigo, redundant phrases, ra-nuki words, and other issues.

Category 3: Notational Consistency

✅ Check 7: Number Format Consistency

In horizontal Japanese business writing, Arabic numerals (half-width) are standard. Ensure no mixing of:

• Full-width vs. half-width numbers (「３月」vs.「3月」)
• Kanji numerals (三) vs. Arabic numerals (3) within the same document

✅ Check 8: Character Variant Consistency

Common inconsistencies to watch for:

• 「ご確認」vs.「御確認」
• 「いたします」vs.「致します」(hiragana vs. kanji)
• 「Web」vs.「ウェブ」vs.「WEB」

Establish a house style guide to eliminate these decisions from individual documents.

✅ Check 9: Particles and Conjunctions

• Are は and が used appropriately for topic vs. subject marking?
• Is ので vs. から used correctly (ので is softer, more appropriate in formal writing)?
• Are reverse-conjunction が (but) overused at the end of polite sentences?

Category 4: Structure and Readability

✅ Check 10: Subject Line / Title Clarity

• Is the email subject line specific enough to convey content?
• Does the opening line include appropriate greetings (「お世話になっております」etc.)?

✅ Check 11: Paragraph and List Structure

• Are sentences appropriately concise? (Aim for under 60–80 characters per sentence in Japanese)
• Is parallelism maintained in bullet points? (All nouns, or all verbs — not mixed)
• Does the document flow logically with appropriate transitions?

✅ Check 12: Subject-Predicate Agreement

Long sentences are a common source of subject-predicate mismatch in Japanese business writing. Break long sentences into shorter ones where the grammatical relationship is clear.

Letter & Word CounterCount characters, words, and paragraphs for essays or social media.

Category 5: Pre-Send Final Checks

✅ Check 13: Recipients (To / CC / BCC)

• Is the To field correct and does it only include intended recipients?
• Are CC recipients appropriate — neither over-included nor omitted?
• For mass mailings to external parties, are BCC fields used correctly to protect privacy?
• Are you replying to an individual rather than "Reply All" when appropriate?

✅ Check 14: Attachments

• Are all attachments mentioned in the body actually attached?
• Are file names clear and meaningful to the recipient?
• Are file sizes appropriate, or should you use cloud sharing?
• Are any files that should be password-protected secured?

✅ Check 15: Fresh-Eyes Review

• Set the document aside for 10–15 minutes, then re-read
• Read aloud to catch rhythm issues and errors your eyes skip over
• For high-stakes documents, ask a colleague to proofread

Proofreading CheckerDetect double-keigo, redundant phrases, ra-nuki words, and other issues.

Efficiency Tips

Use Tools as a First Pass

Spell-checkers and AI proofreading tools catch many surface errors quickly. However, they miss contextual errors — particularly honorific misuse and nuanced formality issues — so human review remains essential.

Create Templates

Templating frequently-sent messages eliminates structural and formatting decisions, reducing the surface area for errors.

Read Aloud

Reading aloud surfaces rhythm problems and logical gaps that silent reading misses. Especially valuable for important documents.

The Complete Checklist

1. Proper nouns verified
2. Dates, numbers, amounts confirmed
3. Punctuation and brackets matched
4. Double honorifics eliminated
5. Respectful/humble forms used correctly
6. "させていただく" not overused
7. Number formats consistent
8. Character variants consistent
9. Particles and conjunctions appropriate
10. Subject line / title clear
11. Paragraph and list structure logical
12. Subject-predicate matched
13. Recipients verified
14. Attachments confirmed
15. Fresh-eyes review completed

Making these 15 checks a habit transforms business communication quality.

Proofreading CheckerDetect double-keigo, redundant phrases, ra-nuki words, and other issues.