ARR Growth Calculator

Project Annual Recurring Revenue forward month-by-month given new-business growth and churn. The math compounds monthly — churn against the shrinking base, growth against the growing one — so the ending number is honest, not the back-of-envelope (growth − churn) × months that flattering decks usually quote.

Inputs

Starting ARR ($)

Today's annualized run rate — MRR × 12, if you measure monthly.

Period (months)

12 = next year, 60 = the T2D3 horizon.

Monthly growth rate (%)

New ARR booked per month, as a % of current ARR.

Monthly churn rate (%)

ARR lost per month from cancellations and downgrades, as a % of current ARR.

Net monthly: 6.00% · Annualized: 101.2%

Ending ARR (month 12)

$2,012,196

×2.01 the starting ARR

New ARR (total)

$1,349,595

Churned ARR (total)

$337,399

Net growth

$1,012,196

T2D3 progress

Bessemer's "triple, triple, double, double, double" — the five-year trajectory from \$1M ARR to ~\$72M that the SaaS standouts followed. Your projection lined up against each year's milestone.

Year	Target	Target ARR	Your ARR	Status
1	Triple (3×)	$3.00M	$2.01M	Behind
2	Triple again (9×)	$9.00M	—	Past projection window
3	Double (18×)	$18.00M	—	Past projection window
4	Double again (36×)	$36.00M	—	Past projection window
5	Double again (72×)	$72.00M	—	Past projection window

Set period to 60 months to evaluate the full T2D3 trajectory.

Month-by-month

Educational, not a forecast. The model assumes constant monthly growth and churn — real SaaS revenue is lumpier (enterprise renewals cluster, seasonal patterns, sales-cycle gaps). Use this for sanity-checking a plan, not for committing numbers to a board deck. The T2D3 benchmark applies to early-stage venture-scale SaaS specifically; bootstrapped businesses, vertical SaaS, and infrastructure tools follow different growth shapes.