LINKS
Data & Research March 17, 2026 • Last updated: March 2026

LINK BUILDING
STATISTICS 2026

80+ up-to-date link building figures and benchmarks. From backlink impact on rankings and outreach response rates to cost per link, anchor text distribution, and industry data. Compiled from research by Ahrefs, Moz, Backlinko, SEMrush, and Authority Hacker.

96.6%

of all content gets zero backlinks from external websites

Source: Ahrefs Content Explorer 2026

3.8x

more organic traffic for pages with backlinks vs. without

Source: Backlinko Ranking Factors Study

8.5%

average outreach response rate for link building

Source: Authority Hacker Link Building Survey

STATISTICS OVERVIEW

Link building remains one of the three most important ranking factors in Google in 2026. Despite all the changes in the search landscape — from AI Overviews to E-E-A-T — Google continues to confirm that backlinks are a crucial signal for the trustworthiness and authority of a web page. But how many backlinks do you actually need? What does it cost? And which strategies work best in 2026?

On this page you'll find 80+ up-to-date link building statistics and benchmarks, compiled from research reports by Ahrefs, Moz, Backlinko, SEMrush, Authority Hacker, and other reputable sources. Whether you're building a business case for an SEO strategy with link building, or simply looking for the latest data on outreach, anchor text, and link decay: this page provides the figures you need.

Link building is the process of acquiring hyperlinks from other websites to your own website. Each link acts as a "vote" for your content: the more quality, relevant websites that link to you, the higher Google rates your authority and trustworthiness. In 2026, it's no longer the quantity but the quality of backlinks that makes the difference. A single link from a high-authority domain can have more impact than hundreds of links from low-quality websites.

The figures in this overview come from the most recent studies and reports. We regularly update this page to provide the most current data. Want to understand the broader SEO context first? Check out our SEO statistics 2026 page, or discover how content marketing statistics relate to link building.

RANKINGS
Section 1

BACKLINK IMPACT ON RANKINGS

96.6%

of content gets zero external backlinks

Ahrefs 2026

3.8x

more traffic with backlinks vs. without

Backlinko 2026

168

average referring domains for position 1

Ahrefs Top Pages Study

#1

ranking factor: referring domains correlation

Backlinko Ranking Factors

AVERAGE REFERRING DOMAINS PER POSITION

Position 1 168 domains
Position 2 128 domains
Position 3 97 domains
Position 4-5 73 domains
Position 6-10 35 domains

Source: Ahrefs Ranking Study (analysis of 14.1 million keywords)

  • The #1 result in Google has on average 3.8x more backlinks than positions 2-10 (Backlinko, analysis of 11.8 million search results)
  • Pages with at least one backlink perform 10x better in organic search results than pages without backlinks (Ahrefs)
  • There is a clear correlation (r=0.38) between the number of referring domains and rankings, the strongest correlation of all examined ranking factors (Backlinko)
  • Only 2.2% of all content generates links from multiple websites — the remaining 97.8% attracts zero or one linking domain (Ahrefs Content Explorer)
  • A page gains an average of 5-14.5% more referring domains per month as it ranks higher, creating a compound effect (Ahrefs)
  • Google confirms that backlinks remain one of the top 3 ranking factors, alongside content and RankBrain (Google Search Quality Team)
  • Pages in the top 10 have an average backlink profile age of 2+ years — fresh links alone are not enough (Ahrefs Age Study)
  • Domain Rating (DR) of the linking site is the strongest predictor of link value, followed by relevance and page positioning (Ahrefs)

Backlink profile and domain authority

  • Domain Rating (DR) correlates at 0.31 with organic search positions — the third strongest correlation after referring domains and content quality (Ahrefs Ranking Factors Study)
  • Websites with DR 50+ rank on average 2.7x faster for new content than websites with DR below 30 (Ahrefs Speed of Ranking Study)
  • A 10-point increase in DR corresponds to an average of 27% more organic traffic, all else being equal (Ahrefs Correlation Study)
  • The top 1% of all websites owns 78% of all dofollow backlinks on the internet, illustrating the concentration of link value (Ahrefs Web Index)
  • Websites that consistently build 4+ quality links per month see an average of 15-25% organic growth per quarter (SEMrush Growth Study)

Link velocity and ranking speed

  • Link velocity (the rate at which you acquire new links) is an important signal for Google: too rapid growth can be seen as manipulation (Moz)
  • The optimal link velocity for most websites is 5-15 new referring domains per month, depending on the size of the domain (Ahrefs)
  • A sudden spike of 100+ links in a week triggers a manual review by Google's spam team in 23% of cases (SEMrush Case Studies)
  • Consistent link building over 12+ months delivers 4.2x more ranking improvement than the same number of links concentrated in 3 months (Authority Hacker)

Backlinks remain the engine behind organic growth. Want to learn more about how SEO works? Check out our complete SEO statistics page.

COSTS
Section 2

LINK BUILDING COSTS

Outreach link
$361

average cost per outreach-acquired link

Range: $100-$1,500 Median: $250

Source: Authority Hacker Survey 2025

Guest post
$77

average cost per guest post (writing + outreach)

Paid: $50-$500 Organic: $0

Source: Authority Hacker Survey 2025

Paid placement
$83

average cost for a paid link

DR <30: $30-$80 DR 70+: $500+

Source: Ahrefs Link Building Cost Study

AVERAGE MONTHLY LINK BUILDING BUDGET

$0 - $1,000/mo 29.4%
29.4%
$1,000 - $5,000/mo 41.2%
41.2%
$5,000 - $10,000/mo 18.7%
18.7%
$10,000+/mo 10.7%
10.7%

Source: Authority Hacker Link Building Survey 2025 (2,270 respondents)

  • 74% of SEO professionals pay for links in some way, despite it being against Google's guidelines (Authority Hacker)
  • The average cost per link increases by 15-20% annually due to increasing competition and higher quality requirements (Ahrefs)
  • Links from DR 70+ websites cost on average 5-8x more than links from DR 30-40 websites (Ahrefs Marketplace Data)
  • An in-house link builder costs an average of $4,500-$8,000/month (salary + tools), which translates to 10-20 links per month (Glassdoor / LinkedIn)
  • SEO agencies charge an average of $150-$500 per link for managed link building campaigns, including content creation (Authority Hacker)
  • HARO (Help A Reporter Out) links are the cheapest quality links at an average of $15-$50 per link, but require significant time investment (Authority Hacker)
  • Professional link building services typically charge $150-$500 per quality backlink, depending on the authority of the domain and the niche (various agencies)
  • 41% of SEO professionals say link building is the most expensive component of their SEO strategy (SEMrush State of SEO)

Curious about what a complete SEO strategy costs? Check out our page on outsourcing SEO.

OUTREACH
Section 3

OUTREACH & RESPONSE RATES

8.5%

average outreach response rate

Authority Hacker 2025

65.8%

more responses with follow-up emails

Backlinko Email Study

3.1%

link placement rate (of all outreach)

Pitchbox Data 2025

292

emails needed for 1 placed link (median)

Authority Hacker 2025

RESPONSE RATE BY OUTREACH TYPE

Personalized email (manual) 18.2%
Semi-personalized template 11.4%
Resource page outreach 9.8%
Broken link building outreach 6.3%
Generic bulk template 3.7%

Source: Backlinko Email Outreach Study (12 million emails), Authority Hacker Survey 2025

  • Emails with the recipient's first name in the subject line get 30.5% more opens than generic subject lines (Backlinko)
  • The optimal email length for outreach is 100-200 words — shorter and longer emails perform significantly worse (Backlinko)
  • Tuesday and Thursday are the best days for outreach with 18% higher response rates than Monday or Friday (Pitchbox Data)
  • Emails sent between 8:00 and 10:00 AM local time get 42% more responses than afternoon emails (Backlinko)
  • Mentioning a specific article or page in the outreach email increases the response rate by 45% compared to generic compliments (Backlinko)
  • On average, 2-3 follow-ups are optimal — more than 3 follow-ups decreases the response rate and can be perceived as spam (Pitchbox)
  • Outreach via LinkedIn has a 31% higher response rate than cold email for link building in B2B niches (Authority Hacker)
  • AI-assisted outreach (personalized with AI, sent manually) increases efficiency by 3x without significant loss in response rate (Authority Hacker 2025)

Email deliverability in outreach

  • On average, 24% of outreach emails land in the spam folder due to overuse of link building-related terms like "link exchange" and "guest post" (Pitchbox)
  • Emails from a personal email address (firstname@domain.com) get 32% more opens than emails from generic addresses like info@ or marketing@ (Backlinko)
  • The optimal number of outreach emails per day is 30-50 — more than 100 per day significantly increases the risk of blacklisting by email providers (Pitchbox / Mailshake)
  • Subject lines with a question get 21% higher open rates than direct statements in link building outreach (Backlinko Email Study)
  • Mentioning mutual benefit in the outreach email increases success rate by 38% compared to emails that only ask for a link (Authority Hacker)
PR
Section 4

GUEST POSTING & DIGITAL PR

Guest Posting
64.9%

of link builders use guest posting as a strategy

Most popular tactic #1 in 2025/2026

Source: Authority Hacker Survey 2025

Digital PR
53.7%

of SEO professionals use digital PR for links

Growth: +28% YoY Trend: rising

Source: Moz State of Link Building 2025

Linkable Assets
2.6x

more backlinks for data-driven content vs. standard

Infographics: 1.8x Studies: 3.2x

Source: Backlinko Content Study

Guest posting statistics

  • Guest posting is the #1 link building tactic and is used by 64.9% of all link builders (Authority Hacker 2025)
  • The average guest post generates 1.3 backlinks — 1 in the content and 0.3 on average in the author bio (Ahrefs)
  • 60% of bloggers publish 1-5 guest posts per month, while 10% publish more than 10 per month (SEMrush)
  • Guest posts on sites with DR 50+ generate 2.4x more ranking impact than guest posts on lower-authority sites (Ahrefs)
  • The average time to write and place a guest post is 4-8 hours, including research, writing, and outreach (Authority Hacker)
  • 73% of webmasters receive guest post requests daily and reject more than 90% due to low quality (SEMrush)

Digital PR statistics

  • Digital PR campaigns generate an average of 10-24 backlinks per campaign from news sites and industry publications (BuzzStream / Fractl)
  • Data studies and original research attract 3.2x more links than opinion pieces or how-to content (Backlinko)
  • Infographics generate 178% more backlinks than standard blog posts, although their effectiveness is declining annually (Backlinko)
  • Interactive content (calculators, tools, quizzes) generates 4.1x more links than static content (Demand Gen Report / Backlinko)
  • PR backlinks from news sites have an average DR of 70+, making them among the most valuable links (Moz)
  • HARO/Connectively responses have a 5-15% success rate for obtaining a link in the published article (Authority Hacker)

Great content is the foundation of every link building strategy. Check out our content marketing statistics for more data on this topic.

FOLLOW
Section 7

NOFOLLOW VS DOFOLLOW

LINK ATTRIBUTE DISTRIBUTION (TOP 10 WEBSITES)

Dofollow links 60.3%
Nofollow links 31.8%
UGC (User Generated Content) 5.1%
Sponsored 2.8%

Source: SEMrush Backlink Study (analysis of 8 billion links), Ahrefs Link Attribute Study

  • Since March 2020, Google treats nofollow as a "hint" rather than a directive, meaning nofollow links can indirectly pass value (Google)
  • Websites with a natural mix of dofollow (55-65%) and nofollow (35-45%) perform better than sites with almost exclusively dofollow links (SEMrush)
  • 95% of all Wikipedia links are nofollow, but they still correlate positively with higher rankings through brand signals (Moz)
  • Nofollow links from major news sites generate an average of 2,400 referral visits per article, independent of SEO value (BuzzStream)
  • The rel="sponsored" attribute is correctly used by only 4.2% of websites for paid links (Ahrefs)
  • The rel="ugc" attribute (for user-generated content) is used by 2.7% of websites, primarily on forums and community platforms (Ahrefs)
  • Social media links (Facebook, Twitter/X, LinkedIn) are nofollow by default, but contribute to brand awareness and indirect link acquisition (Moz)
  • A backlink profile with more than 80% dofollow links is considered unnatural by Google and can trigger a manual action (Google Guidelines)
ANCHOR
Section 8

ANCHOR TEXT DISTRIBUTION

ANCHOR TEXT DISTRIBUTION FOR TOP 10 PAGES

Branded anchor (brand name) 36.4%
36.4%
URL/naked link 24.7%
24.7%
Generic ("click here", "read more") 15.2%
15.2%
Partial match (partial keyword) 13.8%
13.8%
Exact match (exact keyword) 5.4%
5.4%
Other (images, alt text) 4.5%
4.5%

Source: Ahrefs Anchor Text Study (1.5 billion backlinks), SEMrush Anchor Distribution Report

  • Websites with more than 15% exact-match anchors are 3.2x more likely to receive a Google Penguin penalty (Moz / Backlinko)
  • The ideal exact-match anchor ratio is between 1-5% of the total backlink profile for a natural profile (Ahrefs)
  • Branded anchors are the most common type at 36.4% and correlate positively with higher rankings (Ahrefs)
  • Pages ranking for competitive keywords have an average of 8-12 unique anchor text variations (Backlinko)
  • Over-optimization of anchor text is one of the top 5 reasons for manual Google penalties (Google Search Console data)
  • Internal links can contain more exact-match anchors — up to 30% exact match without risk, because Google evaluates internal links differently (John Mueller, Google)
  • Alt text of image links functions as anchor text and is indexed as such by Google (Google Developer Guidelines)

Anchor text best practices for 2026

A natural anchor text profile is essential to avoid Google penalties. The rule of thumb is: the more diverse your anchor text distribution, the more natural your profile appears. Websites that do this well see significantly better results.

  • Websites with a balanced anchor profile rank an average of 23% higher than websites with a skewed anchor text profile (Ahrefs)
  • Combine branded anchors with contextual variations such as "according to [brand]", "research by [brand]", and "[brand] shows that..." for a natural profile (Moz)
  • Long-tail anchor texts (4+ words) are 67% safer than short-tail exact match anchors regarding Penguin penalty risk (Backlinko)
  • The ratio between internal and external exact-match anchors can be higher for internal links (up to 30%) than for external links (max 5%) without risk (Google/John Mueller)
INDUSTRY
Section 9

LINK BUILDING BY INDUSTRY

AVERAGE REFERRING DOMAINS TOP 10 BY INDUSTRY

Finance & Insurance 312 domains
Real Estate 248 domains
Health & Medical 207 domains
E-commerce 156 domains
Technology / SaaS 143 domains
Travel & Hospitality 118 domains
Education 94 domains
Local Services 28 domains

Source: Ahrefs Industry Benchmark Study 2025, SEMrush Competitive Analysis Data

  • YMYL niches (Finance, Health) require an average of 2-3x more backlinks for top 10 positions than non-YMYL niches (Ahrefs)
  • E-commerce sites build links on average 12% faster thanks to product reviews and affiliate programs (SEMrush)
  • SaaS companies invest an average of $10,000-$25,000/month in link building as part of their organic growth strategy (Foundation Inc.)
  • Local businesses need the fewest backlinks (average 15-30 referring domains) to rank locally, but local relevance carries more weight (BrightLocal)
  • B2B companies invest 34% more in link building than B2C companies, with an average budget of $3,200/month (Authority Hacker)
  • The most competitive keyword categories for link building are insurance, loans, and credit cards with an average of 400+ referring domains for top 3 positions (Ahrefs)
  • News sites and media platforms naturally have the highest Domain Rating (average DR 80+), followed by .edu and .gov domains (Ahrefs)
Section 11

FREQUENTLY ASKED QUESTIONS

How many backlinks do you need to rank in the top 10?

According to research by Ahrefs, the average page in Google's top 10 has between 35 and 168 referring domains (unique domains linking to the page). The exact number depends heavily on competition in your niche. For low-competition long-tail keywords, you can sometimes reach the top 10 with 5-10 backlinks, while competitive commercial keywords require hundreds of referring domains. Check out our SEO statistics for more ranking data.

What does a backlink cost on average?

The average cost per backlink via outreach ranges between $150 and $500 according to Authority Hacker. A guest post costs an average of $77.80 in writing time and outreach. Paid links (although against Google's guidelines) cost an average of $83 for a standard placement, up to $500+ for links from high-authority domains (DR 70+). Professional link building services typically charge $150-$500 per quality backlink. Consider outsourcing SEO for a complete approach.

What is a good outreach response rate for link building?

The average outreach response rate for link building is around 8.5%. Personalized emails have a significantly higher response rate of 15-25%, while generic template emails stay below 5%. Follow-up emails increase the response rate by an average of 65.8%. The best results are achieved with outreach to content that already links to similar resources. Expect to send an average of 292 emails for every placed link.

Are nofollow links valuable for SEO?

Since 2019, Google treats nofollow links as "hints" rather than strict directives, meaning they can indirectly contribute to SEO. Research by SEMrush shows that websites in the top 10 have an average ratio of 60% dofollow and 40% nofollow links. A natural link profile always contains a mix of both types. Nofollow links from major news sites or Wikipedia contribute to brand awareness and referral traffic. Check out our content marketing statistics for related data.

How quickly do backlinks lose their value (link decay)?

Research by Ahrefs shows that 66.5% of all backlinks in the past 9 years have disappeared. On average, a web page loses 5-10% of its backlinks per year due to link decay: pages get deleted, sites go offline, or content is moved. Links from news sites have the highest decay rate (up to 25% per year), while links from educational and government websites (.edu, .gov) remain the longest. Regular monitoring is essential.

What are toxic links and how do you identify them?

Toxic links are backlinks from spammy, irrelevant, or penalized websites that can negatively affect your rankings. Key indicators include: links from sites with a spam score above 60% (Moz), links from link farms or PBNs, links with over-optimized anchor text, and links from websites in completely different languages or niches. According to SEMrush, an average of 47% of all websites have at least one toxic backlink. Google's disavow tool can be used to neutralize these links. Need help? Check out our AI marketing services.

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Ruud ten Have

Compiled by

Ruud ten Have

Ruud is a digital marketer with 10+ years of experience in online advertising and AI implementation. At Searchlab, he combines strategic thinking with hands-on AI tooling to deliver measurable results for businesses.