12 Cover Letter Mistakes That Cost You the Interview (and How to Fix Each)

Hiring managers do not reject most cover letters because the candidate is unqualified. They reject them because the letter makes one of a handful of avoidable mistakes in the first few seconds of reading. Fix those, and your letter immediately stands out from the majority of the pile.

Here are the 12 mistakes that cost people interviews, why each one hurts, and exactly how to fix it.

1. The generic, untailored letter

This is the big one. A letter that could go to any company reads like it went to every company. Recruiters spot it instantly, and it tells them you are mass-applying, not specifically interested in them.

The fix: Tailor the opening and at least one body paragraph to the specific role. Reference a real company initiative, product, or value, and tie your experience to the actual requirements in the posting. If you cover the company name and the letter still works for any employer, it is too generic.

2. Opening with "I am writing to apply for"

The most common first line in the world is also the most forgettable. It wastes your most valuable sentence on a phrase that carries zero information.

The fix: Lead with a hook, either a specific reason the company caught your attention or a one-line proof point that maps to the job. See how to write a cover letter for opening examples.

3. Restating your resume

The recruiter already has your resume. A cover letter that lists the same jobs and bullet points adds nothing and burns the one chance to add context.

The fix: Use the letter to tell the story behind one accomplishment, the situation, what you did, and the measurable result, and to explain why you want this role. Add to the resume, do not echo it.

4. Making it all about you

"This role would be a great opportunity for me to grow" centers your needs. Employers hire to solve their problems, not to advance your career.

The fix: Flip the framing. For every "I want," include a "here is what I would do for you." Lead with the value you bring to their goals.

5. Vague claims with no proof

"I have strong leadership skills and a results-driven mindset" is filler. Anyone can write it, so it persuades no one.

The fix: Replace every adjective with evidence. Instead of "results-driven," write "I grew our newsletter from 2,000 to 15,000 subscribers in a year by testing subject lines weekly." Specifics are credible. Adjectives are not.

6. Typos and the wrong company name

A typo in a document you had unlimited time to perfect signals carelessness. Pasting the wrong company name from your last application is an instant rejection, and it happens constantly.

The fix: Read the letter aloud, run a spell check, and double-check the company and hiring manager names every single time. If you reuse a template, the company name is the first thing to verify.

7. Being too long

A 600-word cover letter does not get read past the first 200 words. The carefully crafted closing never gets seen.

The fix: Keep it to 250-400 words on one page, three to four paragraphs. If you are over, cut the sentences that repeat your resume first. Our length guide has a paragraph-by-paragraph word budget.

8. "To Whom It May Concern"

This greeting feels like it was written in 1985. It signals you did not bother to find out who you are writing to.

The fix: Find a name in the posting, on the company team page, or on LinkedIn. If you truly cannot, use "Dear Hiring Team," which is modern and warm.

9. Empty enthusiasm and buzzwords

"I am incredibly passionate about leveraging synergies in a fast-paced, dynamic environment" is a string of words that means nothing. Overused buzzwords make a letter sound automated.

The fix: Show enthusiasm through specifics, not adjectives. "I read your engineering blog for fun, the post on your database migration is why I applied" demonstrates real interest better than "I am passionate about technology" ever could.

10. Ignoring the applicant tracking system

Many companies screen applications with software before a human reads them. A letter with no relevant keywords, or one saved in a format full of tables and graphics, can get filtered out before anyone sees it.

The fix: Mirror the important terms from the job description naturally, and keep formatting simple: standard fonts, single column, no tables or text boxes. See our ATS-friendly cover letter guide and the keyword guide.

11. Apologizing for what you lack

"Although I do not have direct experience in this field" or "I know I may not be the most qualified" plants doubt in the reader's mind. You are arguing against yourself.

The fix: Lead with what you bring. If you are early-career or changing fields, frame your transferable skills and fresh perspective as assets. Confidence, backed by specifics, is persuasive. Self-deprecation is not.

12. No clear next step

Ending with "Thank you for your consideration" and nothing else lets the letter trail off. You want the reader to act.

The fix: Close with a specific, low-friction next step. "I would love to walk through how this work maps to your 2026 goals whenever works for you." It signals confidence and makes it easy to move forward.

The quick pre-send checklist

Before you submit, confirm:

• The company name and hiring manager name are correct
• The opening hooks and is tailored to this role
• At least one body paragraph tells a specific, quantified story
• Nothing simply repeats the resume
• It is under 400 words on one page
• Formatting is ATS-safe
• There is a clear closing call to action

Let the tool catch the mistakes for you

Many of these mistakes are exactly what a purpose-built generator is designed to avoid. GenerateCoverLetter writes in a tailored structure, bans the clichés and empty buzzwords, keeps the length in range, and tracks ATS keyword coverage so you do not have to police all twelve by hand. You can try it for $1 for three days, then edit the draft until it sounds like you.

Avoid these twelve and your cover letter already beats most of the stack. The rest is making it specific.