Khaled Azar 
LTM ARR vs run rate ARR SaaS valuation comes down to trust. LTM revenue is the last 12 months of actual performance, run rate ARR is current recurring revenue annualized, and NTM revenue is the next 12 months of forecast revenue. Public SaaS comps in May 2026 show a median 6.8x NTM revenue multiple, but private buyers still test that forward number against actual ARR quality before they pay for it.
That is why founders get frustrated. The seller thinks the business is worth a multiple of the newest ARR figure. The buyer wants to know how much of that number survived churn, discounts, implementation delays, and one time expansion. The fight is rarely about the headline multiple first. It is about the revenue base the multiple should touch.
LTM ARR vs Run Rate ARR SaaS Valuation Starts With Definitions
If the definition is fuzzy, the valuation will be fuzzy.
LTM means last twelve months. It is backward looking. It captures what customers actually paid over the prior year. Buyers like it because it can be tied to accounting records, bank deposits, invoices, and revenue recognition.
Run rate ARR is different. It usually starts with current recurring revenue and annualizes it. If May MRR is $250,000, a founder may call that $3 million of run rate ARR. That can be fair if the contracts are active, recurring, and durable. It becomes aggressive if May was inflated by a one time catch up, a seasonal spike, or a large customer that has not renewed.
NTM means next twelve months. It is a forecast. Value Add VC reported that the median public SaaS company traded at 6.8x NTM revenue in May 2026, with companies above 40 percent revenue growth at 13.2x. Public markets use NTM because investors price future growth. Private M&A buyers use NTM only when the forecast survives diligence.
Median public SaaS multiple in May 2026, according to Value Add VC. That benchmark is forward looking, but it does not remove buyer diligence on the revenue base.
Why Sellers Lead With Run Rate ARR
Sellers lead with run rate ARR because it usually shows the company at its best current point. If ARR grew from $2.4 million to $3.6 million during the year, LTM revenue may understate the business. A buyer who only looks backward misses the current scale.
That does not make run rate ARR wrong. It makes it a claim that needs proof. The best sellers show the bridge from LTM to current ARR. They separate new logo revenue, expansion, contraction, churn, discounts, and delayed starts. They also show how much revenue is contracted versus merely forecasted.
This is where ARR quality changes valuation. Two companies can both claim $4 million of ARR. One has annual contracts, 100 percent gross revenue retention, and clean invoicing. The other has month to month contracts, heavy discounting, and late payment patterns. Buyers will not treat those as the same revenue base.
Lead with run rate ARR only if you can reconcile it to LTM revenue and prove the current number is contracted, recurring, and collectible.
When Buyers Use LTM ARR Instead
LTM is the buyer’s cleanest way to avoid paying for a forecast twice.
Financial buyers usually start with LTM or a heavily diligence adjusted current ARR number. They care about repeatability. If a company grew 15 percent with 103 percent net revenue retention, that is a different underwriting case than a company growing 42 percent with unproven new cohorts. SaaS Capital’s 2026 survey of more than 1,000 private B2B SaaS companies found that bootstrapped companies with $3 million to $20 million in ARR had median growth of 15 percent and median NRR of 103 percent. The 90th percentile reached 42.3 percent growth and 117.9 percent NRR.
That spread matters. A buyer will pay closer attention to run rate ARR when the company is in the top performance band and the data supports it. If growth is average, churn is noisy, or bookings have slipped, the buyer will anchor closer to LTM.
Public and disclosed transaction data also tends to depend on verified historical periods. Multiples.vc says its private transaction methodology uses LTM revenue and LTM EBITDA when available, and only takes the next best fit period such as run rate or calendar year revenue when LTM data is unavailable and sensible for the deal.
| Revenue base | What it proves | Where it wins | Main buyer concern |
|---|---|---|---|
| LTM revenue | Actual historical performance | Financial buyers, lenders, lower growth assets | It can lag a real growth inflection |
| Run rate ARR | Current recurring scale | Fast growing companies with clean retention | It can overstate durable revenue |
| NTM revenue | Forward growth plan | Strategic buyers, growth equity, public comps | It depends on forecast credibility |
How Buyer Type Changes the ARR Number
Strategic buyers and financial buyers often ask the same question for different reasons. A strategic buyer may care about NTM because it sees product, customer, or channel upside. A PE buyer may care about current ARR, but only after normalizing churn, cohort behavior, gross margin, and customer concentration.
If you are talking to strategics, you can show NTM, but do not let the story become pure forecast. Tie the forecast to signed contracts, expansion history, pipeline conversion, and known customer usage. If you are talking to PE, show run rate ARR, but expect them to rebuild it from customer level data.
This is why strategic buyers versus financial buyers is not just a buyer list question. It changes the revenue base, the diligence package, and the negotiation frame.
Founder mistake: quoting the highest ARR number in the first call without showing the reconciliation. That invites the buyer to control the definition later.
The Seller Framework for Positioning ARR
Do not pick one ARR number and hope the buyer accepts it. Show all three. Start with LTM revenue, bridge to current run rate ARR, then explain NTM only after the first two are clean.
The order matters. LTM builds credibility. Run rate ARR shows momentum. NTM shows upside. If you skip straight to NTM, the buyer hears optimism. If you lead with LTM and bridge forward, the buyer sees evidence.
Your bridge should be simple enough for a buyer to test in the data room. Start with prior year recognized recurring revenue. Add net new ARR. Add expansion. Subtract churn and contraction. Remove one time services, implementation, usage spikes, and nonrecurring payments. Then tie the final number to active contracts and invoices.
That bridge also belongs in your model. The best SaaS financial models buyers review before making an offer do not bury ARR definitions in tabs. They make the revenue base visible.
The strongest seller position is not the biggest ARR number. It is the cleanest bridge from actual revenue to current recurring revenue to defensible forecast.
How This Changes the Multiple Conversation
Once the revenue base is clear, the multiple conversation gets sharper. A buyer may offer 5x LTM revenue, 4x run rate ARR, or 3.5x NTM revenue. Those offers can produce similar enterprise values, but they signal different beliefs about risk.
This is why sellers should not compare multiples without comparing denominators. A 6x multiple on stale LTM revenue may be worse than a 4.8x multiple on verified current ARR. A 7x multiple on NTM may look great until the purchase agreement turns missed forecast into an earnout.
Use the same discipline you would use when reading SaaS valuation multiples in 2026. Multiples only mean something when the denominator, growth rate, retention, margin profile, and buyer type are clear.
Frequently Asked Questions
What is LTM ARR?
LTM ARR means the recurring revenue generated over the last twelve months. Buyers like it because it is tied to actual customer payments, invoices, and revenue records.
Is run rate ARR misleading?
Run rate ARR is not misleading if it is based on active recurring contracts and reconciled to LTM revenue. It becomes misleading when it annualizes a temporary spike, a one time expansion, or revenue that is not yet contracted.
What’s NTM ARR used for?
NTM ARR is used to show the next twelve months of expected recurring revenue. Public SaaS comps often use NTM revenue, but private buyers usually haircut it unless signed contracts, retention, and pipeline conversion support the forecast.
Do buyers use forward or trailing multiples?
Buyers use both, but the weighting depends on buyer type and forecast credibility. Financial buyers often anchor to LTM or adjusted current ARR, while strategic buyers may give more credit to NTM if the upside is specific and provable.
Next Steps
If your valuation depends on which ARR number a buyer accepts, get the revenue bridge clean before the first serious conversation.