Annual-plan customers are where MRR and ARR reporting most commonly goes wrong, because the cash arrives all at once but the revenue recognition — and the MRR figure — should be spread across the year.
The correct conversion
A customer who pays $2,400 upfront for an annual plan contributes $200/month to MRR — not $2,400 in the month they paid, and not $0 until renewal.
The mistake to avoid
Some teams book the full $2,400 as MRR in the month of payment, which spikes that month's MRR and understates every other month — making growth trends impossible to read. Others wait and add nothing until the next annual payment, which understates MRR all year and misses the recurring nature of the revenue entirely. Both distort the metric MRR exists to provide: a smooth, comparable, month-to-month view of recurring revenue.
Cash flow and MRR are not the same thing
This is the single most important distinction for annual-plan businesses. Cash flow shows $2,400 landing in one month. MRR shows $200/month recognized evenly. Your runway model should use cash flow; your growth-rate and investor reporting should use MRR. Mixing the two — for example, using annual cash spikes to claim high "MRR growth" — misrepresents the business.
ARR for a mixed monthly/annual customer base
still holds once MRR is calculated correctly per the rule above — you don't need a separate ARR formula for annual-plan customers, you just need MRR itself to be computed correctly first.
Frequently asked questions
What happens to MRR when an annual customer churns mid-contract? Most SaaS companies remove the customer's MRR contribution from that point forward, even though they may have already collected the full annual payment — MRR reflects ongoing recurring revenue, not cash already banked.
Should upfront annual discounts change the MRR calculation? No — MRR should reflect the actual contract value the customer is paying, discount already applied, divided by 12. The discount affects the dollar amount, not the method.
Use the ARR / MRR Converter to convert any annual contract value into its correct monthly MRR contribution.