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Research

Cover letter statistics for 2026: 55 figures, each with its source

By The Cover Letter GuruUpdated 14 min read

In the one field experiment here, applications with a tailored cover letter had a 53% higher callback rate than applications with none. In surveys, 83% of 625 US hiring managers said they frequently or always read cover letters, and 46.8% of 1,000 US job seekers said they used AI to some extent in their last one. Trust them loosely: most are surveys paid for by companies that sell resume or hiring products.

Below are 55 figures in nine groups, a section on how to read them, and six well-known claims we could not trace.

Key points

  • Only one entry tested whether a letter changes the outcome. The rest of the evidence on that question is opinion surveys.
  • Surveys of people who hire disagree. 83% of US hiring managers in one said they frequently or always read cover letters, and nearly 40% of HR professionals in another said they do not read them at all.
  • No figure here measured how long a cover letter is read. The well-known 7.4 seconds is about resumes.
  • "Can tell it was AI" is what hiring managers said about themselves. In the tests we found, neither people nor software detected AI writing reliably, and none of them put recruiters in front of cover letters.
  • Before you repeat a figure, check who was asked, how many, who paid, and when.
  • Some of the most repeated numbers, such as "seven seconds" and "75% rejected by software", have no source we could find.
In this guide

Whether a cover letter changes the outcome

One entry tested the outcome directly, with 7,287 fictitious applications and the callbacks counted.

53%

higher callback rate for applications with a cover letter tailored to the job than for applications with no cover letter.

Source: ResumeGo, 2020. Field experiment: 7,287 fictitious job applications, July 2019 to January 2020. Run by a resume writing company and not peer reviewed.

It is the only experiment in the list. A resume writing company ran it, and it is not peer reviewed. What it means for your own application is in Do you still need a cover letter in 2026?. The same page reports a survey:

FindingWho was askedSource and year
87% said they read cover letters.236 hiring professionalsResumeGo, 2020
81% said they valued tailored cover letters significantly over generic ones.236 hiring professionalsResumeGo, 2020

What people who hire say

These are surveys of hiring managers, recruiters and HR staff. Every row is what people said about themselves.

83%

of the hiring managers asked said they frequently or always read cover letters.

Source: Resume Genius, 2022. Survey of 625 US hiring managers.

In the same survey, 4% said they never or infrequently read them.

Whether they read one and expect one

FindingWho was askedSource and year
83% said they read the cover letter in full.753 recruitersZety, 2024
89% said they expect cover letters from candidates.753 recruitersZety, 2024
60% of their companies require a cover letter: 72% of medium-sized and 69% of large companies.625 US hiring managersResume Genius, 2022
45% said they read the cover letter before the resume.625 US hiring managersResume Genius, 2022
49% expect candidates to submit a cover letter: 51% of in-house employers and 33% of recruiters.625 UK hiring managers and recruitersCV Genius, 2024
30.3% expect a cover letter even if the posting says it is optional.603 hiring professionals across 56 industriesiHire, 2021
72% said they still expect a cover letter when the job advert says it is optional.200 hiring decision-makersResumeLab, undated (cited elsewhere as 2019)
77% said that when a cover letter is optional they give preference to candidates who sent one.200 hiring decision-makersResumeLab, undated
Nearly 40% said they do not read cover letters at all.More than 200 HR professionalsNovoresume, 2025

How much weight they give it

FindingWho was askedSource and year
94% said cover letters influence their interview decisions. About one in four called them "very important".625 US hiring managersResume Genius, 2022
49% said a strong cover letter can secure an interview for an otherwise weak candidate. 18% said a weak one can sink an otherwise strong candidate.625 US hiring managersResume Genius, 2022
87% said cover letters are a key factor when deciding who gets an interview.753 recruitersZety, 2024
81% said they have rejected applicants based solely on their cover letters.753 recruitersZety, 2024
57% said cover letters are influential or extremely influential in their hiring decisions. 15% said little to no impact.625 UK hiring managers and recruitersCV Genius, 2024
65.3% agreed that cover letters are important. The same share said they would prefer pre-screening questions to a cover letter as a way to learn about a candidate.603 hiring professionalsiHire, 2021
91% said cover letters are valuable when evaluating candidates: 21% "very valuable", 70% "somewhat valuable". 9% said "not valuable at all".More than 1,000 senior managersOfficeTeam (Robert Half), 2012

Length and reading time

Everything in this table is self-reported. Nobody was timed, and we found no study that measured how long a cover letter is read. How long should a cover letter be? shows one letter at three lengths.

FindingWho was askedSource and year
36% said they spend less than 30 seconds reading a cover letter. 48% said between 30 seconds and 2 minutes.625 US hiring managersResume Genius, 2022
The page says hiring managers "recommend keeping cover letters around 400 words".625 US hiring managersResume Genius, 2022
49% said the perfect length is half a page. 26% said one page and 25% a few sentences.753 recruitersZety, 2024

Tailoring

Three surveys asked people who hire about letters written for the specific job. How to write one is in How to write a cover letter.

FindingWho was askedSource and year
72% said customising a cover letter is "important" or "very important" (27% "very important"). 5% said "not at all important".625 US hiring managersResume Genius, 2022
77.3% want candidates to customise the cover letter for the specific position.603 hiring professionalsiHire, 2021
54% said they value personalised cover letters that highlight a candidate's unique value.384 recruitersJobscan, 2025

Cover Letter Guru writes each letter from your resume and the job listing. The first letter is free, with no card.

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What job seekers do

Three of these four rows come from one publisher, and the first was asked of its own users, not of job seekers in general.

FindingWho was askedSource and year
22% said they always submit a cover letter. 47% said only if the job explicitly asks for one, and 31% said they do not use cover letters at all.More than 5,579 of Novoresume's own usersNovoresume, 2023
47.3% said they have skipped applying to at least one job because it required a cover letter.1,000 US job seekersNovoresume, 2026
73.4% said they tailor their cover letters in some way. 10.6% send the same letter to every job.1,000 US job seekersNovoresume, 2026
45% of job seekers said they do not include a cover letter with their resume.3,244 full-time US workers (Harris Poll)CareerBuilder, 2016

AI: how many applicants use it

Only the most recent of these four surveys asked about cover letters specifically.

46.8%

of the job seekers asked said they used AI to some extent in their last cover letter.

Source: Novoresume, 2026. Survey of 1,000 US job seekers, July 2026.

The other 53.2% said they wrote it entirely on their own. The three older surveys:

FindingWho was askedSource and year
39% said they used AI during the application process. Of those, 54% used it to generate resume text and 50% to generate cover letter text.3,290 job candidatesGartner, 2024
57% of job seekers said they used AI to create their resumes in 2024. Also on the page: 73% of hiring managers believe candidates should disclose generative AI use in application materials.More than 10,000 respondents in 10 countriesCanva, 2025
46% said they were using ChatGPT to write their resumes, their cover letters or both.More than 1,000 current and recent job seekersResumeBuilder.com, 2023

AI: what people who hire say about it

All of this is self-report: a hiring manager who says they can tell is describing their own confidence. We set it against what has been tested in Can recruiters tell a cover letter was written by AI?.

88%

of the hiring managers asked said they can tell when candidates use AI to help with applications, cover letters or resumes.

Source: Insight Global, 2024. Survey of 1,005 US hiring managers.

In the same survey, 54% said they would care.

FindingWho was askedSource and year
80% said they can often tell when a resume has been written by AI. 77% said many resumes appear completely or partially AI-generated. About resumes.1,000 US hiring managersResume Genius, 2026
44% of the HR professionals said it is easy to detect AI use in CVs. About CVs.1,004 respondents worldwide; the number in HR is not statedKickresume, 2025
74% said it is possible to tell when AI is used to write a job application.625 UK hiring managers and recruitersCV Genius, 2024
80% view AI-generated content on CVs and cover letters negatively. 57% said it makes them less likely to hire or is a dealbreaker.625 UK hiring managers and recruitersCV Genius, 2024
19.6% said they would reject a candidate with an AI-generated resume or cover letter. 52% said using AI for proofreading or drafting support is acceptable.600 US hiring managersTopResume, 2025
66% approve of candidates using AI for cover letter writing. 26% are less likely to interview candidates who rely heavily on AI, and 36% said AI use does not affect their decisions.500 HR managersZety, 2024
49% named heavily AI-generated application materials as a red flag, second only to job-hopping at 65%. 58% said they use AI to screen resumes themselves.1,500 US hiring managersResume Genius, 2026
53% said they dislike AI-generated resumes. 20% see them as a critical concern. About resumes.625 US hiring managersResume Genius, 2024

AI: what has been measured about detection

These five entries are measurements, not opinions. None tested whether recruiters can spot an AI-written cover letter. The middle column says what was tested.

61.22%

was the average rate at which seven widely used GPT detectors wrongly flagged essays written by non-native English speakers as AI-generated.

Source: Liang and others, Stanford University, 2023. Seven GPT detectors run on 91 TOEFL essays written by people, with 88 US eighth-grade essays for comparison.

The same detectors were near-perfect on essays by US eighth-graders. 89 of the 91 essays by non-native speakers were flagged by at least one detector. Peer reviewed (Patterns).

FindingWho was askedSource and year
Participants were unable to detect self-presentations written by AI language models, in professional, hospitality and dating contexts. Peer reviewed (PNAS).4,600 members of the public in six experiments, judging profile-style textsJakesch, Hancock and Naaman, 2023
OpenAI's own classifier correctly identified 26% of AI-written text as "likely AI-written" and labelled human-written text as AI-written 9% of the time. OpenAI withdrew it in July 2023 "due to its low rate of accuracy".OpenAI's evaluation on a set of English textsOpenAI, 2023
A test of 14 AI-text detection tools concluded that they are "neither accurate nor reliable" and lean towards classifying text as human-written.12 publicly available tools and 2 commercial onesWeber-Wulff and others, 2023
After a platform gave applicants an AI cover letter tool, the link between how closely a cover letter's text matched the job post and whether the applicant got a callback fell by 51%. Access to the tool raised callback rates, and time spent editing the AI draft was positively correlated with hiring success.Freelance job applications on a large online labour platform. A working paper, not yet peer reviewedCui, Dias and Ye, 2025

If you draft with AI, the editing pass is in How to make an AI cover letter sound like you.

Screening and resumes

None of these is about cover letters. They are often quoted beside cover letter figures, and the first is the probable origin of a claim we could not trace.

FindingWho was askedSource and year
7.4 seconds was recruiters' average initial look at a resume in an eye-tracking study. It did not measure cover letters.Recruiters reading resumes; the number is not statedLadders, 2018
72% said they spend less than two minutes reviewing a resume before deciding. 3% said less than 10 seconds.Recruiters; the number is not statedZety, 2024
68% said they may reject a qualified candidate for a typo in the application materials, and 72% for a resume not customised to the role.Recruiters; the number is not statedZety, 2024
An applicant tracking system was detected on the careers pages of 487 of the Fortune 500 companies (97.4%). These are the largest US companies, not employers in general.Jobscan's inspection of 500 careers pagesJobscan, 2026
99.7% said they use filters in their ATS or a similar system to find candidates. 76.4% filter by skills.384 recruitersJobscan, 2025
23 of 25 recruiters (92%) said their systems do not auto-reject resumes for formatting, content or design.25 US recruiters, interviewedEnhancv, 2025
180 applicants per hire on average at small businesses in 2024. 3% of applicants were invited to interview.Hiring records of more than 60,000 small businessesCareerPlug, 2025

How to read these numbers

  • Asked or measured. Forty-six of the 55 figures are answers to a survey or interview question: what people said they do, expect or believe. Nine were measured (the callback experiment, the five entries in the detection section, the eye-tracking study, Jobscan's inspection and CareerPlug's records). "Said they read it in full" is a different claim from "read it in full".
  • Who paid. Most of the surveys come from companies that sell resume or hiring products, and a finding that cover letters matter suits a company that helps people write them. That does not make a number wrong. We sell a cover letter tool ourselves, so read this page the same way.
  • How many, and who. The smallest sample here is Enhancv's 25 recruiters. The largest is CareerPlug's records of more than 10 million applications, and the largest survey is Canva's. US hiring managers are not employers in general, and a publisher's own users are not job seekers in general.
  • The question. ResumeLab reports that 72% still expect a cover letter when the advert says it is optional. iHire reports that 30.3% expect one even if the posting says it is optional. It is nearly the same question, put to 200 people and to 603, and nothing on either page says which answer is nearer the truth. You will also see the 72% credited to other publishers. It is ResumeLab's.
  • Age. OfficeTeam's figure is from 2012 and CareerBuilder's from 2016. ResumeLab's page gives no date for its survey; others cite it as 2019. For a claim about now, prefer the rows dated 2024 or later.

Figures we could not trace

These six claims are widely repeated. For each we looked for an original source (a survey, a report or a paper) and did not find one. We are not saying they are wrong, only that we could not check them.

  • "Recruiters spend six or seven seconds on a cover letter." We found no study that timed anyone reading a cover letter. The claim is probably a distortion of the Ladders eye-tracking study, which measured the first look at a resume.
  • "75% of resumes are rejected by an applicant tracking system before a person sees them." We found no study, method or sample behind it. What we could verify about screening software is in the table above.
  • "Each corporate job opening attracts 250 resumes, four to six interviews and one hire." It is usually credited to Glassdoor. We did not find a Glassdoor report that states it. The only applicant count we could verify is CareerPlug's, for small businesses.
  • "A set share of cover letters is never read." The percentage varies with the telling. We found no study that measured how many letters go unread, only surveys asking people whether they read them.
  • "Personalised cover letters raise interview rates by 72%", or make an interview "1.9 times more likely". We found no source for either. The nearest figure we could verify is the ResumeGo experiment at the top of this page.
  • "Hiring managers can tell when a cover letter was written by AI." As a statement of fact, it has no source we could find. Every figure behind it is a survey of people saying they can, and we found no experiment that tested recruiters on AI-written cover letters.

How we checked

Each figure was read on its publisher's own page in October 2026, with the sample and the year as that page states them. Where a page no longer exists (ResumeLab's), we link an archived copy. Surveys we could not open ourselves were left out. We count one figure per finding, so a row with two or three related numbers from the same question counts once.

Common questions

Do cover letters increase your chances of getting an interview?
In the one experiment here, tailored ones did: of 7,287 fictitious applications, those with a tailored cover letter had a 53% higher callback rate than those with none. A resume writing company ran it, and it is not peer reviewed. The rest is opinion surveys, which we weigh up in Do you still need a cover letter in 2026?.
How long do recruiters spend reading a cover letter?
We found no study that measured it. The only figures are self-reported: 36% of 625 US hiring managers said less than 30 seconds, and 48% said between 30 seconds and 2 minutes. The "seven seconds" claim is probably a distortion of an eye-tracking result for resumes.
Why do surveys about cover letters give such different results?
They ask different people differently worded questions in different years. Two surveys on whether an optional letter is still expected reported 72% and 30.3%. Read who was asked before you read the headline number.
Can I quote these statistics in my own article?
Yes. Cite the original publisher, which is linked in every row, and give the sample and the year with the number. Open the source page yourself first: one survey here survives only as an archived copy.

Sources

  • ResumeGo, 2020. Field experiment: 7,287 fictitious job applications, July 2019 to January 2020. Run by a resume writing company and not peer reviewed.
  • Resume Genius, 2022. Survey of 625 US hiring managers.
  • Novoresume, 2026. Survey of 1,000 US job seekers, July 2026.
  • Insight Global, 2024. Survey of 1,005 US hiring managers.
  • Liang and others, Stanford University, 2023. Seven GPT detectors run on 91 TOEFL essays written by people, with 88 US eighth-grade essays for comparison.

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