How to Write a Cover Letter: Step-by-Step Guide

Despite debate about whether cover letters still matter, 83% of hiring managers say a strong cover letter can secure an interview even if the resume isn't perfect, according to a 2024 Robert Half survey. The key word is "strong" — a generic cover letter hurts more than it helps.

Cover Letter Structure

Every effective cover letter follows this framework:

1. Header and Greeting

Match your cover letter header to your resume for a cohesive look. Always address a specific person if possible. Check LinkedIn, the company website, or call the front desk to find the hiring manager's name.

• Good: "Dear Ms. Rodriguez," or "Dear Hiring Team at Acme Corp,"
• Bad: "To Whom It May Concern" or "Dear Sir/Madam"

2. Opening Paragraph (The Hook)

Your opening must accomplish three things in 2-3 sentences: name the specific position, show genuine enthusiasm, and hint at your biggest qualification.

Strong opening: "When I saw the Senior Product Manager opening at Stripe, I knew my 6 years of building payment infrastructure at scale made this a perfect fit. At my current company, I led the team that processed $2.3B in transactions last year — and I'm excited about the opportunity to do even more at Stripe."

Weak opening: "I am writing to express my interest in the position posted on your website. I believe I would be a great fit for the role." — This could be sent to any company for any job.

3. Body Paragraphs (The Evidence)

Use 1-2 paragraphs to connect your experience directly to the job requirements. Pick the 2-3 most important qualifications from the job posting and show (don't tell) how you meet them.

The STAR method works here too:

• Situation: Set the context
• Task: Describe your responsibility
• Action: Explain what you did
• Result: Quantify the outcome

Example: "Your job posting emphasizes the need for someone who can reduce customer onboarding time. In my current role at TechCo, I redesigned the onboarding flow from 14 steps to 5, cutting time-to-value from 23 days to 8 days and improving 90-day retention by 31%."

4. Closing Paragraph (The Ask)

Express enthusiasm, restate your value briefly, and include a clear call to action.

Strong close: "I'd welcome the chance to discuss how my experience scaling product teams from 4 to 20 people could support Stripe's growth plans. I'm available for a conversation at your convenience and can be reached at (555) 123-4567."

Cover Letter Mistakes to Avoid

• Rehashing your resume: The cover letter should add context and personality, not repeat bullet points.
• Making it about you: Focus on what you can do for the company, not what the company can do for you.
• Being too long: 250-400 words is the sweet spot. Hiring managers won't read a full-page essay.
• Forgetting to customize: If you can swap in any company name and the letter still works, it's not specific enough.
• Negative tone: Never badmouth previous employers or apologize for weaknesses.

When You Don't Need a Cover Letter

Skip the cover letter only if:

• The application explicitly says "no cover letter needed"
• You're applying through a quick-apply system with no upload option
• A recruiter directly asked for your resume only

In all other cases, include one. It's low effort for high potential reward.

FAQ

How long should a cover letter be?

250-400 words, which typically fills half to three-quarters of a page. Anything longer risks not being read. According to a Saddleback College study, the average recruiter spends 30-60 seconds on a cover letter.

Should my cover letter match my resume design?

Yes. Use the same font, header style, and color scheme. This creates a professional, cohesive application package.

Can I use AI to write my cover letter?

AI can help draft a cover letter, but you must personalize it with specific details about the company and your genuine experience. Recruiters can spot generic AI-written letters, and many companies now use AI detection tools. Use AI as a starting point, then make it authentically yours.

What if I don't know the hiring manager's name?

Use "Dear [Department] Hiring Team" or "Dear Hiring Manager." Both are professional and appropriate. Avoid gendered greetings unless you know the person's preferred pronouns.