There is no universal number. Any agency quoting one without looking at your competitors is guessing, and usually guessing high.
The honest answer is that you need enough referring domains to be competitive for the specific keywords you care about. This guide shows how to calculate that figure for your own situation.
Count Referring Domains, Not Backlinks
This distinction changes every calculation that follows.
- A backlink is any single link pointing at your site
- A referring domain is a unique website linking to you at least once
- Fifty links from one site count as one vote, not fifty
Referring domain count is consistently the stronger correlator with rankings. When you set targets, set them in domains.
How to Work Out Your Own Number
Rather than chasing a benchmark, measure the pages you are trying to beat.
Step One: Pick the Keyword, Not the Site
- Choose one commercial keyword that would genuinely change your pipeline
- Search it and list the URLs currently ranking in positions one to ten
- Ignore total site authority for now
Step Two: Measure Page Level Links
- Check referring domains pointing at each ranking URL, not at the homepage
- Note the median rather than the average, since one outlier distorts it
- Record the range between the weakest and strongest result
Step Three: Target the Gap
- Compare the median to what your equivalent page currently has
- The difference is your realistic target for that page
- Repeat for each priority keyword
Teams are often relieved by this exercise. The gap is frequently ten or fifteen domains, not hundreds.
Why Competitor Averages Mislead
Site wide link counts are the least useful number in this exercise.
- A competitor with 40,000 backlinks may have 900 referring domains
- Much of that profile was built for pages you are not competing against
- Age matters, since links accumulate over years you cannot compress
Comparing your two year old product to a decade old incumbent at domain level produces a target nobody can hit. Page level comparison keeps the goal honest.
Rough Guidance by Keyword Difficulty
Use this as a sanity check on your own analysis, not as a substitute for it.
| Keyword Type | Typical Referring Domains to Page | Realistic Timeline |
|---|---|---|
| Long tail, low competition | 0 to 5 | 1 to 3 months |
| Comparison and alternatives | 5 to 20 | 3 to 6 months |
| Category head terms | 25 to 60 | 6 to 12 months |
| Broad commercial terms | 60 plus | 12 months plus |
Most SaaS revenue comes from the middle two rows. Those are winnable within a year at a sensible budget.
Quality Changes the Number Dramatically
Ten strong links can outperform a hundred weak ones, which is why volume targets alone are unreliable.
- Relevance: a link from a site in your category carries more weight than an unrelated one
- Traffic: the linking page should receive real visitors
- Placement: links inside body content beat footers and author bios
- Uniqueness: a first time referring domain is worth more than another link from an existing one
How Many Links Should You Build Per Month?
Once you know the gap, pace becomes the practical question.
Work Backwards From the Gap
- Add up the domain gaps across your priority pages
- Divide by the number of months you have
- Compare that to what your budget can realistically buy
A Typical Starting Pace
- Early stage SaaS: 8 to 15 quality placements per month
- Growth stage competing on head terms: 15 to 30 per month
- Anything beyond that usually means quality is slipping
Steady acquisition also looks more natural than sudden spikes, which matters if you want the profile to hold up over time.
Signs You Do Not Need More Links
Sometimes the honest answer is that links are not the constraint.
- You already match or exceed the median for pages outranking you
- Your page loads slowly or the content is thinner than competitors
- Search intent does not match, for example a product page targeting an informational query
- The page is not internally linked from anywhere important on your site
Building links to a page with the wrong intent is the most common way SaaS teams waste budget. Fix the page first.
What to Track Instead of a Target Number
- Referring domain growth to the specific pages you are working on
- Ranking movement for the keyword each page targets
- Gap closure against the median of the pages ranking above you
- Branded search volume, which rises as coverage accumulates
Final Thoughts
The right number of backlinks is whatever closes the gap between your page and the pages currently outranking it. For most SaaS companies chasing comparison and category terms, that means ten to sixty referring domains per priority page, not thousands site wide.
Measure the pages you want to beat, target the median, and build steadily. That approach produces a number you can actually justify to a finance team.
Two Questions Worth Answering First
Before committing to any monthly target, resolve these.
Are You Competing Against Pages or Brands?
- Some results rank because the page earned links directly
- Others rank because the brand is trusted across the whole category
- The first is a link problem you can solve; the second needs sustained brand coverage as well
How Old Are the Pages Above You?
- Check when each ranking URL was first published
- A page that took four years to gather thirty domains sets a slower benchmark than the raw number suggests
- Newer pages ranking with few links usually signal a beatable result
A Worked Example
Say you sell project management software and want to rank for a comparison term.
- The ten ranking URLs have between 4 and 41 referring domains
- The median sits at 14
- Your equivalent page currently has 3
- Your realistic gap is around 11 referring domains
At 8 to 15 placements a month across all pages, and with several priority pages sharing that capacity, this single page is a two to three month project rather than a year long campaign. That is a target you can plan and budget against.
