Every figure sourced and dated, August 2026

CAC payback period benchmarks for 2026: SaaS magic number, LTV to CAC ratio and what each one tells an acquirer

CAC payback period is how many months of gross profit it takes to earn back what you spent acquiring a customer. In 2026 the median B2B SaaS company takes 16 months, down from 18 a year earlier. The top quartile gets it back in 6 months or fewer and the bottom quartile needs 24 months or more. Alongside it, the median SaaS magic number reached 1.37 and the blended CAC ratio came in at $1.30 of sales and marketing spend per $1 of new annual recurring revenue.

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Those are operator benchmarks, drawn from 342 mostly venture-scale companies, and they are worth knowing before you buy something. They are not, however, a scorecard you can hold up against every acquisition target, because a large share of the SaaS businesses that actually change hands spend almost nothing on acquisition. When sales and marketing spend rounds to zero, CAC payback rounds to zero and the magic number goes to infinity, and neither number is telling you the business is efficient. It is telling you the growth was never bought in the first place, which is a different fact with very different consequences for a buyer. Both readings are unpacked below.

A CAC payback period of zero is not a perfect score. It usually means the seller never had a repeatable way to buy growth, which is the single most expensive thing a buyer can discover after closing.

Three sales efficiency metrics, every row sourced

CAC payback, magic number and LTV to CAC benchmarks for 2026

CAC payback period is measured in months of gross profit, not months of revenue, so a company with a thin gross margin pays back more slowly on identical sales spend. Magic number divides new annual recurring revenue by the prior period sales and marketing spend, so it reads the same efficiency from the opposite direction. LTV to CAC compares lifetime value against acquisition cost. All three come from the same survey, so they are directly comparable with each other.

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Cohort or metric	Figure	Metric	What it tells an acquirer	Source	As of
B2B SaaS, median	16 months	CAC payback	The typical company waits well over a year to earn back one customer acquisition	Aleph and Benchmarkit, 198 reporting	FY2025
B2B SaaS, prior year median	18 months	CAC payback	An 11% year-over-year improvement, the largest in the four years tracked	Aleph and Benchmarkit	FY2024
B2B SaaS, top quartile	6 months or fewer	CAC payback	Fast enough that growth can be funded out of the business rather than out of capital	Aleph and Benchmarkit	FY2025
B2B SaaS, bottom quartile	24 months or more	CAC payback	Two years of gross profit committed before a customer contributes anything	Aleph and Benchmarkit	FY2025
Under $5K average contract value	11 months	CAC payback	Small self-serve contracts pay back fastest, which is the band most listings sit in	Aleph and Benchmarkit	FY2025
$50K to $100K average contract value	22 months	CAC payback	Enterprise sales cycles roughly double the wait	Aleph and Benchmarkit	FY2025
Horizontal SaaS	14 months	CAC payback	Broader markets are cheaper to sell into per customer	Aleph and Benchmarkit	FY2025
Vertical SaaS	18 months	CAC payback	Costlier to acquire, but usually retained longer, so judge it with retention alongside	Aleph and Benchmarkit	FY2025
Companies growing more than 50%	10 months	CAC payback	The fastest growers are also the most efficient, not the least	Aleph and Benchmarkit	FY2025
B2B SaaS, median	1.37	Magic number	For every $1 of prior period sales spend, $1.37 of new recurring revenue arrived	Aleph and Benchmarkit, 132 reporting	FY2025
B2B SaaS, prior year median	0.94	Magic number	FY2025 was the first year in four that the median crossed 1.0	Aleph and Benchmarkit	FY2024
B2B SaaS, 75th percentile	2.14	Magic number	Top-quartile go-to-market returns more than double the spend	Aleph and Benchmarkit	FY2025
B2B SaaS, 25th percentile	0.68	Magic number	The bottom quartile is buying revenue at a loss on a one-year view	Aleph and Benchmarkit	FY2025
Companies growing more than 50%	2.40	Magic number	Efficiency and growth move together in this data, they do not trade off	Aleph and Benchmarkit	FY2025
Companies growing 11% to 30%	Below 0.75	Magic number	The slow-growth middle is where sales spend stops paying for itself	Aleph and Benchmarkit	FY2025
Blended CAC ratio	$1.30	CAC ratio	Total sales and marketing cost per $1 of new recurring revenue, down 7% year over year	Aleph and Benchmarkit	FY2025
New name CAC ratio	$1.63	CAC ratio	Winning a brand new customer costs 25% more than the blended figure suggests	Aleph and Benchmarkit	FY2025
Horizontal SaaS	4.1x	LTV to CAC	Comfortably above the 3x rule of thumb that most operators quote	Aleph and Benchmarkit	FY2025
Vertical SaaS	5.6x	LTV to CAC	Higher acquisition cost, but longer retention more than compensates	Aleph and Benchmarkit	FY2025

All figures come from the 2026 SaaS and AI Performance Benchmarks report published jointly by Aleph and Benchmarkit on 1 June 2026, covering 342 B2B SaaS and AI-native software companies on full-year 2025 actuals. CAC payback figures reflect the 198 participants that reported the metric and magic number figures reflect the 132 that reported it, so the sub-samples differ and the two metrics are not measured on an identical set of companies. The publishers report a median rather than a mean for these metrics. Ranges describe a population of mostly venture-scale operating companies and are not a valuation of, or a target for, any specific business. This is educational, not investment advice.

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Can you even see acquisition spend before you make an offer? It depends on the venue

A fair look at what each does well. Both are useful. Here is where they differ.

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Feature	Buyouts	Flippa	Empire Flippers
Is marketing and advertising spend broken out before an offer?	Recurring revenue, growth and churn are verified and shown on the listing	Whatever the seller chooses to upload, in a free-form listing	Included in the vetted profit and loss provided to approved buyers
Is the revenue figure verified or seller-stated?	Verified before the listing goes live	Stated financials are vetted above $50,000, self-reported below it	Vetted before a listing is published
Are churn and retention shown on the listing?	Yes, on every listing, which is what makes a lifetime value estimate possible	Not a standard listing field	Usually available in the listing package rather than the public summary
Can you compute CAC payback from what is published?	Gross margin and growth are on the listing, so the arithmetic is possible	Rarely, since spend detail is inconsistent between listings	Generally yes, once you are approved and have the full financials
What you have to do before seeing detail	Buyer membership, from $99 a month	Free to browse, $49 a month for the paid buyer tier	Free account, then unlock individual listings
Fee at close on a $1,000,000 sale	3% on the $1,500 seller tier, so $30,000	10% success fee, so $100,000. No listing fee band is published above $99,999	$105,000 plus $24,000, so $129,000
Best suited to	Buyers pricing AI SaaS off verified recurring revenue, growth and churn	Buyers willing to do their own verification across a very wide catalogue	Buyers who want vetted financials and will pay a higher close fee for them

Comparison reflects general, publicly understood positioning. Capabilities change, so check each marketplace for the latest. Trademarks belong to their owners.

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Most acquisition targets have no CAC to pay back

This is the point where the benchmark and the deal in front of you stop lining up. The 2026 figures come from 342 companies with real sales teams and real budgets, where the median company spends $1.30 to win $1 of new recurring revenue. A large share of the SaaS businesses listed for sale are bootstrapped products that grew on search traffic, a community, an integration directory or the founder posting about it, with sales and marketing spend close to zero. Run the formula on one of those and CAC payback is roughly zero months and the magic number is undefined, because you are dividing by nothing. Both look like perfect scores. Neither is. What they actually tell you is that nobody has ever proved the growth can be purchased, so the moment you own it and want to accelerate, you are running an experiment with no prior. Price that as unproven, not as efficient, and budget for the experiment.

Magic number and CAC payback can disagree about the same company

They look interchangeable and they are not. CAC payback is measured in months of gross profit, so it is dragged down by a thin gross margin even when sales execution is excellent. A company at a 50% gross margin and one at 85% with identical acquisition costs and identical prices will report payback periods that differ by about 70%. Magic number ignores gross margin entirely and compares new recurring revenue against the prior period sales and marketing spend, which makes it a cleaner read on the sales engine and a worse read on whether the business generates cash. The gap matters most on AI-native products, where inference costs push gross margins below the 80% software median and the payback period looks bad for a reason that has nothing to do with the go-to-market. When the two metrics disagree, check the gross margin first. Note also that the two figures come from different sub-samples of the survey, 198 companies for payback against 132 for magic number, so treat cross-metric comparisons as directional.

What a buyer should actually do with these numbers

Use them to size the reinvestment you will have to make, not to score the seller. Start by asking what the business spent to acquire customers in the trailing twelve months and how much of the growth came from that spend rather than from existing traffic. If there is genuine spend, compute payback on gross profit and compare it against the 16-month median, the 11-month figure for sub-$5K contracts, or the 22-month figure at $50K to $100K contracts, depending on which band the product sells into. Then translate it into cash: a 16-month payback means every new customer you buy is a hole in working capital for more than a year, which is a real constraint if you are servicing acquisition debt at the same time. If there is no meaningful spend, the useful question changes from how efficient is this to what would it cost me to find out, and the honest answer is usually a few months of budget and a quarter of patience before you know anything. Either way the benchmark is a planning input, not a pass or fail gate.

Good questions

Flippa vs Buyouts, answered

CAC payback period is the number of months of gross profit from a new customer needed to recover what it cost to acquire them. A 12-month payback means a customer has repaid their own acquisition cost after a year and everything after that contributes to the business. It is the standard measure of how capital-hungry a growth engine is.

Divide customer acquisition cost by the monthly recurring revenue from a new customer multiplied by gross margin. Using gross profit rather than revenue is what makes the figure honest, because it charges the cost of actually serving the customer against the payback. Skipping the gross margin term is the most common mistake and it flatters every result.

Under 12 months is strong and under 6 months is top quartile. The median B2B SaaS company took 16 months on full-year 2025 results, so anything under a year is genuinely above average. The bottom quartile sits at 24 months or more, which is where growth stops being self-funding and starts requiring outside capital.

The median was 16 months across the B2B SaaS companies reporting the metric on full-year 2025 actuals, improved from 18 months the year before. The publishers report a median rather than an average. It varies widely by contract size: 11 months under $5,000 of annual contract value and 22 months between $50,000 and $100,000.

Add all sales and marketing spend for a period, divide by the number of new customers won to get CAC, then divide that by the new customer monthly recurring revenue multiplied by gross margin. For an acquisition target, insist the spend figure includes contractor and agency costs and any founder time being paid for, since those are routinely left out.

Gross profit, in any correct version of the formula. Using revenue instead ignores hosting, support and third-party costs, and it inflates the result by the inverse of the gross margin. At the 80% median software gross margin the difference is 25%. On an AI-native product carrying heavy inference costs it can be far larger.

Magic number is new annual recurring revenue added in a period divided by the sales and marketing spend of the prior period. It measures how much recurring revenue each dollar of go-to-market spend produced. Anything above 1.0 means the spend returned more than it cost within a year, judged on revenue rather than on profit.

Above 1.0 is the usual threshold and above 2.0 is top-quartile performance. The median reached 1.37 on full-year 2025 results, the first time in four years of the survey that it crossed 1.0, with the 75th percentile at 2.14 and the 25th percentile at 0.68. Companies growing more than 50% posted a median of 2.40.

Three to one is the rule of thumb most operators use, and the 2026 data sits comfortably above it. Horizontal SaaS reported 4.1x and vertical SaaS 5.6x on full-year 2025 results. Vertical products cost more to acquire but retain longer, which is why the ratio ends up higher despite the worse payback period.

Yes, but as a cash planning input rather than a grade. A 16-month payback means every customer you acquire after closing is a working capital hole for more than a year. That matters enormously if you are servicing acquisition debt, and much less if you are buying a profitable product you intend to run without accelerating it.

Then CAC payback is close to zero and the magic number is undefined, and neither figure means the business is efficient. It means growth was never bought, so there is no evidence about what buying it would cost. Treat that as an unproven and unpriced experiment you will have to fund yourself, not as a strength.

The median moved from 18 months to 16, an 11% gain and the largest single-year improvement in the four years tracked. Blended CAC ratio fell 7% to $1.30 and new name CAC ratio improved about 19% to $1.63 over the same period. Sales and marketing budgets were cut harder than revenue fell, so efficiency rose.

Regularly. Magic number ignores gross margin and CAC payback is denominated in gross profit, so a company with an unusually thin gross margin can look efficient on one and poor on the other. When they disagree, check the gross margin before concluding anything about the sales team. The median software gross margin is 80%.

Every figure on this page comes from the 2026 SaaS and AI Performance Benchmarks report published jointly by Aleph and Benchmarkit on 1 June 2026, covering 342 B2B SaaS and AI-native companies on full-year 2025 actuals. CAC payback reflects 198 reporting companies and magic number 132. Check the source before relying on any of it.

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