Annual Prepay Is a Retention Tool, Not a Growth Tool. ChartMogul's Data on 2,500 SaaS Companies Shows Why

Founders who read about annual billing usually hear one story: prepay improves cash, cuts churn and raises lifetime value, so push it everywhere. ChartMogul's 2025 SaaS Billing Report, built on full-year 2024 data from more than 2,500 SaaS companies, tells a more specific story about annual vs monthly billing. The benefits are real, but they show up at a different stage than most advice assumes.

This piece walks through the numbers, separates what the data shows from what it only suggests, and ends with a sequencing rule you can apply this quarter.

The headline: monthly-heavy companies grew fastest early on

Among companies under $1M ARR, the top growth quartile derived over 75% of revenue from monthly plans, and that group grew 131% year over year. Growth stayed above 100% even when monthly was only half the revenue. Median growth looked very different for companies leaning on annual plans: roughly 15% when annual supplied 50-75% of revenue, and about 18% when it supplied more than 75%.

Between $1M and $10M ARR the pattern held at smaller scale. Companies with at least 75% monthly revenue grew 9% faster than those with under 25% monthly, and the gap widened to 18% in the top quartile. After annual plans passed about a quarter of ARR, the growth effect levelled off.

Why monthly billing helps at the start

An annual invoice is a bigger decision. A buyer who has used your product for ten minutes is being asked to commit a year of budget, which often needs approval and a purchase order. A monthly plan turns the same decision into a card swipe.

That friction matters most when you have no brand, no reviews and few reference customers. Early on, your constraint is the number of people willing to try the product, not the cash per customer. Monthly billing widens the top of the funnel, and the trial-to-paid conversion you need to learn from arrives faster.

Monthly billing also gives you honest feedback. Cancellations arrive within weeks, so you see what is broken while the customer still remembers why they left. A prepaid annual customer can be unhappy for eleven months before you find out.

Why annual billing wins later: retention

The retention side of the report is where annual plans earn their place. At $250-500 ARPA, median net revenue retention was 88% for annual plans and 76% for monthly. The gap appeared at every ARPA level in the dataset. Top companies above $500 ARPA kept 85% or more of customers on annual plans.

The effect is largest for cheap products. Below $25 ARPA, median customer retention was 62% on annual plans versus 41% on monthly, a 21-point difference. Above $100 ARPA the gap narrowed to about 10 points. For low-priced tools, the annual commitment does much of the retention work, because the monthly price is too low to make anyone check their statement.

Treat the retention gap with the same caution as the growth gap. Customers who pick an annual plan were probably more committed before they paid. The plan type selects the loyal customers as much as it creates them.

The best time to ask for annual is month two

The most actionable finding concerns timing. ChartMogul found monthly-to-annual upgrades peak in month two. Customers who signed up in January 2024 were over three times as likely to upgrade in month two as in month nine, and upgrade likelihood stayed high through roughly months two to five.

Scale matters too. In the $15M-30M ARR band, 78% of companies saw monthly-to-annual upgrades, against 9% of companies under $300K ARR. Smaller companies mostly never ask. A lifecycle email at day 45 offering annual at a discount is a cheap experiment, and the data suggests it lands best before the customer has settled into a habit of paying monthly.

A sequencing rule for founders

Put together, the data points to a sequence rather than a choice:

• Launch with monthly as the default plan and the price you show first.
• Add an annual option once you have a handful of customers who have stayed three months or more, so you know the discount buys real commitment.
• Trigger the annual offer in month two to four, inside the product and by email, rather than at signup.
• Discount for what you need. Discounts were most common at lower ARPA and narrowed above $500 ARPA, so a high-ticket product can often hold price.
• Make annual the default for low-ARPA products once retention is your bigger problem than acquisition.

ChartMogul also notes that Q1 is the strongest quarter for new sales and Q4 the slowest. If you plan a prepay promotion, running it near the start of the year works with that seasonality instead of against it.

Practical notes for Indian SaaS teams

Two operational points deserve a check with your finance advisor before you launch an annual plan. First, recurring card payments in India run under the RBI e-mandate framework, which applies authentication rules above set value limits, so a large annual charge may behave differently from a small monthly one. Verify the current limits with your payment gateway. Second, GST treatment and revenue recognition differ for advance receipts: cash arrives upfront, but the revenue is earned across the year, so your books need deferred revenue handling and your invoicing needs to follow the GST time-of-supply rules.

What to measure on your own data

Averages from 2,500 companies will not tell you what your customers do. Pull your own cohorts: retention by billing plan at months 3, 6 and 12, and the share of monthly customers who upgrade by month. If annual cohorts retain better only because loyal customers self-select into them, you should still offer the plan, but you should not expect a discount campaign to repair weak monthly retention. The next useful dataset for most teams is the one they already have, split by plan type.