The short answer
How should a SaaS company set and scale a link building budget?
Size it from the link gap on the specific pages you want to rank: find how many referring domains the pages in positions 1 to 3 have, subtract yours, price the difference at the cost per link you are actually quoted, and spread it over a fixed number of months. In the worked example below, a 30-domain gap closed over five months at $509 per link comes to about $3,359 per month including a 10% replacement reserve. Survey averages are a sanity check on that number, not the source of it.
What does survey data say about link prices and budgets?
The most-cited recent figures come from one survey. Editorial.Link surveyed 518 SEO professionals (Search Engine Land, 2025), and Search Engine Land reported the results on 27 June 2025, so the data is more than a year old. Search Engine Land notes that Editorial.Link is a link building agency, so the findings may lean towards respondents who rely on link acquisition.
| Finding | Figure | How to read it |
|---|---|---|
| Average price respondents consider acceptable for one high-quality link | $508.95 | Willingness to pay. Quotes in your category can sit well above or below it |
| Monthly budget needed to compete in high-difficulty niches | $8,406 | Self-reported average minimum, not a recommendation |
| Share of SEO budget spent on links | 32.1% for agencies, 36.0% for in-house teams | Two sample averages, not a target |
| Respondents who outsource at least part of link building | 56% | Hybrid models are common |
| Respondents who expect link costs to keep rising over 2 to 3 years | 80.9% | An expectation, not a measurement |
| Respondents who struggle to scale link building without losing quality | 67.2% | Quality control is the scaling problem |
Claim strength: reported by survey respondents in 2025. Source: Search Engine Land reporting of the Editorial.Link survey, 27 June 2025.
How do you size a budget from the link gap?
- Pick the page. Choose the commercial URL you want to rank, such as an “alternatives to” page.
- Pull the benchmark. In a backlink tool, count the unique referring domains pointing to the pages in positions 1 to 3 for your core query. Use the pages, not the domains: a competitor can have thousands of referring domains pointing at old press releases that do nothing for the ranking page.
- Compute the deficit. Average referring domains on the top pages minus the referring domains on your page.
- Price it. Multiply the deficit by the cost per link you are quoted for publishers that pass your qualification checks.
- Add a reserve. Hold back a share for replacing placements that fail. Ten percent is our planning assumption, not a measured rate. Claim strength: opinion.
- Spread it over time. Divide by the number of months in the sprint.
Worked example. The top three pages average 45 relevant referring domains and yours has 15, so the deficit is 30. Over a five-month sprint that is 6 placements per month. At $509 per link, closing the gap costs $15,270, or $3,054 per month. Add the 10% reserve and the monthly figure is about $3,359. Claim strength: derived. Inputs are illustrative except the $509, which is the rounded survey average.
Link-gap budget calculator
Enter your own numbers. Defaults are the worked example in the article and are illustrative. Nothing leaves your browser.
- Referring-domain deficit
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- Placements needed per month
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- Cost to close the gap
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- Monthly budget with reserve
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Pipeline check
Work backwards from the revenue the page must produce. Call-to-contract rate default (8.33%) is the rate implied by the original example. Replace it with yours.
- Contracts needed per year
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- Discovery calls needed per year
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- Qualified visits needed per month
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Text version of the calculator. Budget per month = (average referring domains on the top pages minus your referring domains) x cost per link x (1 + reserve) / months. With 45, 15, $509, 10% and 5 months: 30 x 509 x 1.10 / 5 = $3,359 per month. The calculator runs in your browser and sends nothing anywhere.
Does the budget make sense against pipeline?
Check it by working backwards from the revenue the page has to produce. The earlier version of this article used a $120,000 new ARR target, a $12,000 average contract value and a 2% visit-to-call rate, and concluded that the page needs 500 qualified visits a month.
That result only holds if one in 12 discovery calls closes, because 500 visits x 2% x 12 months = 120 calls, and 10 closed contracts out of 120 calls is 8.33%. The close rate was never stated. Here is the corrected chain:
| Step | Value | Calculation |
|---|---|---|
| New ARR target | $120,000 | Input |
| Average contract value | $12,000 | Input |
| Contracts needed | 10 | 120,000 / 12,000 |
| Call-to-contract rate | 8.33% | Input, implied by the original example. Replace with your own |
| Discovery calls needed per year | 120 | 10 / 0.0833 |
| Visit-to-call rate | 2% | Input |
| Qualified visits needed per month | 500 | 120 / 12 / 0.02 |
Claim strength: derived from the stated inputs. The rates are illustrative, not benchmarks. If your own call-to-contract rate is higher, you need far fewer visits, and the link gap you can justify shrinks with it.
What should you price for in-house versus agency?
Price both options from your own numbers. We removed the salary bands and agency retainer ranges from the earlier version because they had no source. List the lines to fill in instead:
- In-house: salaries and benefits for the roles you need, tool subscriptions, outreach software, content and design for linkable assets, and the months it takes to hire and train.
- Agency: monthly retainer or per-placement fees, content production if it is billed separately, and your own time for approvals and reporting.
- Hybrid: the Editorial.Link survey found 56% of respondents outsource at least part of the work, which makes hybrid a common starting point (Search Engine Land, 2025).
Compare cost per qualified placement, not cost per month.
How much should you reserve for decay?
Ahrefs’ link rot study (2022) found that 66.5% of links to 2,062,173 sampled websites had rotted since January 2013, and that 74.5% counted as lost for SEO purposes. The sample covers links to random sites over about nine years.
It is not a measure of editorial placements you buy, and it does not give an annual rate, so we do not derive one. Track your own placements at 90, 180 and 365 days and size the reserve from that. See our note on link rot and churn.
What is the policy guardrail?
Google’s spam policies (2026b) list buying or selling links for ranking purposes as link spam, and state that links bought for advertising or sponsorship are acceptable when they carry rel=“nofollow” or rel=“sponsored”. Put labelled sponsorships in a media budget and judge them on audience. Do not build a plan that depends on unlabelled paid links.
What does a 12-month budget plan include?
| Phase | Focus | What to measure |
|---|---|---|
| Months 1 to 3 | Benchmark the gap, qualify publishers, test two or three acquisition channels in small batches | Reply rate, qualified placement rate, cost per qualified placement |
| Months 4 to 6 | Scale the channels that held quality, keep the replacement reserve | Referring domains added on target pages, share of placements live and indexed at 90 days |
| Months 7 to 9 | Re-pull the gap, re-price | Gap remaining, cost per link versus the first quarter |
| Months 10 to 12 | Review durability, decide whether to fund the next page | Share of placements live at 180 and 365 days, pipeline from the target page |
Check rankings and conversions on the target page across the same months, and report them next to link counts. Our guide to reporting link building to leadership covers the format.
Key takeaways
- Start from the gap, not from a monthly target: referring domains on the ranking pages minus yours, times your quoted cost per link.
- One widely quoted benchmark, $508.95 per link, is the average price respondents called acceptable in a survey of 518 SEO professionals run by a link building agency (Search Engine Land, 2025). It is a willingness-to-pay figure, not a market price list.
- The same survey puts the minimum monthly budget needed to compete in high-difficulty niches at $8,406 on average. Your own gap calculation can come out far lower or higher.
- A link budget needs a pipeline check. The original version of this article's worked example skipped an assumption, and the corrected chain is below.
- Plan for decay. Ahrefs found that 66.5% of links to a 2,062,173-site sample rotted over about nine years, so some of the budget replaces what you lose (Ahrefs, 2022).
- Paid placements that pass ranking credit without a label are link spam under Google's policy (Google, 2026b). Budget for sponsorships as labelled media spend.
References
- Ahrefs (2022) 'At least 66.5% of links to sites in the last 9 years are dead', Ahrefs Blog, 29 April (updated 2 February 2024). Available at: https://ahrefs.com/blog/link-rot-study/ (Accessed: 20 October 2026).
- Google (2026b) 'Spam policies for Google web search', Google Search Central, last updated 28 August. Available at: https://developers.google.com/search/docs/essentials/spam-policies (Accessed: 20 October 2026).
- Search Engine Land (2025) 'Survey says: AI is changing search, but links still matter to SEOs', Search Engine Land, 27 June. Available at: https://searchengineland.com/ai-search-links-still-matter-seo-survey-457692 (Accessed: 20 October 2026).
