Pool Service Price Increase Impact Calculator

The decision number is the break-even churn: the largest fraction of your route you can lose on a price increase and still match today's revenue. It is the exact solution of (1 + r)(1 − c) = 1, not the loose "raise 10%, lose up to 10%" rule (which slightly overstates how many you can afford to lose).

r              = percent / 100        (or flat-$ / current price)
R0             = price × accounts                     (current revenue/mo)
P1             = price × (1 + r)                      (new price/account)
R1 (full)      = P1 × accounts                        (new revenue/mo, no churn)
break-even c   = r / (1 + r)
accounts lost  = floor(accounts × c)                  (whole accounts)
monthly change = R1 − R0                              (= price × accounts × r)
annual change  = 12 × monthly change
at your churn  = P1 × (accounts − expected lost)

Example: $100/account/mo × 50 accounts at +10% → break-even churn 0.10 / 1.10 = 9.09%, or floor(50 × 0.0909) = 4 accounts. Revenue rises from $5,000 to $5,500/mo at full retention (+$500/mo, +$6,000/yr). Lose exactly 4 of 50 and you still net 46 × $110 = $5,060/mo — +$60/mo over today.

This is a single-session decision aid, not a customer list, a stored-account record, or a billing engine. It never persists accounts, never tracks churn over time, and never applies the change anywhere. The optional "expected accounts lost" field is a hypothetical input, not a churn log. Benchmark ranges in the hints (8–10% standard, ~$225/mo route average, 0–5 accounts typical churn) are industry ranges, not guarantees — see Sources.

The increase itself has to be justified before it is announced. Rebuild the per-pool cost stack in the calculator that sets the recurring figure so the new rate is the answer to a cost question rather than a round number, then publish the whole menu, recurring rate and add-ons together, on one sheet every account and tech sees so every account gets the same letter and every tech quotes the same figure.

Two related numbers move with this one. A route sells on its recurring revenue, so an increase that holds changes what the book is worth: the pool route valuation calculator puts a multiple on it, and the guide to valuing a pool service business explains which of those numbers a buyer actually pays for. The churn rate entry covers how the loss figure above is normally defined.