Raise prices prospectively, with a clear account of which work qualifies, what customers have already agreed to and when a new price would begin. Tell people the amount and the decision they face before asking them to commit. A notice cannot quietly rewrite an accepted order.
Start with the actual agreements. Some prices may already be fixed for future visits; others may concern a renewal that has not been accepted. Those customers need different messages.
Separate the eligible work
Consider an entirely fictional office-plant maintenance service reviewing prices on November 2, 2026. It currently charges $150 for one defined visit and proposes $180 for the same service. Its supplied terms preserve accepted orders and quotes until their stated expiry. Each new monthly service period requires a fresh accepted quote; there is no automatic renewal or unilateral price-change right in this example.
The owner chooses November 16 for newly issued quotes and December 1 for proposed new monthly periods. These are chosen dates under the fictional terms, not legally required notice periods.
The service's prospective price-change schedule
Scroll across to see the action for each category. Use the arrow keys when the table area is focused.
| Work or offer | Applicable price | Action before changing the calendar |
|---|---|---|
| Visits already accepted, including December bookings | The agreed $150. | Keep the confirmed service, price and date. Do not reprice because delivery falls after November 16. |
| An issued, unaccepted quote | The quoted price through its written expiry. | Honor its existing acceptance window. Requote only when that window has ended or a different offer is actually agreed. |
| A new monthly period beginning December 1 or later | Offer $180 per visit. | Explain the new amount and obtain acceptance before treating the period as booked. A previous customer's silence is not acceptance under these terms. |
| Genuinely new quotes issued November 16 or later | Offer $180 per visit. | Show the defined service, price and available dates together before acceptance. |
Give whoever handles bookings the same schedule. If an old quote is accepted while still valid, update the price mix in the plan. A new price on the website would not remove that existing offer.
Price the month you can deliver
For December, the service has 48 available crew hours, enough for at most 24 visits. Each visit consumes two hours in total, including travel, preparation, service and cleanup. Variable cost is $72 per visit, including the full cost of paid crew labor, employer charges, supplies and travel. Fixed monthly operating costs are $1,200, including paid scheduling and administration; no unpaid owner work is required.
These are the complete operating costs in this limited, before-income-tax model. There is no financing, new equipment purchase or separate promotion cost. The visit cost and fixed costs stay unchanged within the stated capacity. The ACCA explanation of contribution distinguishes sales less variable costs from the result after fixed costs.
The $150 visit contributes $78 toward fixed costs; the $180 visit contributes $108. Eight December visits are already accepted at $150. Suppose the owner plans for another six renewal visits and six new-customer visits at $180. Those twelve are conditional purchases, not established retention or demand.
- Twenty visits at the old price: $3,000 revenue less $1,440 variable costs and $1,200 fixed costs leaves $360.
- Eight old-price and twelve new-price visits: $3,360 revenue less the same $1,440 and $1,200 leaves $720. Forty crew hours fit the available 48.
- Eight old-price and only eight new-price visits: $2,640 revenue less $1,152 variable costs and $1,200 fixed costs leaves $288. The higher price has not preserved the old twenty-visit result.
The calculations show what each specified mix would produce. They do not predict how customers respond. Record declines and their stated reasons without assuming every lost order was caused by price. Keep the discount-and-volume guide for that separate arithmetic question.
Write a notice that matches the rules
Here is an illustrative notice prepared on November 2. It is not a message sent to real customers:
Our price for the same plant-maintenance visit will be $180 on new quotes issued from November 16. For a new monthly service period starting December 1 or later, we'll send you a quote at $180 per visit for your approval before booking. Visits you have already confirmed keep their agreed price, and existing quotes remain valid until their stated expiry. If you would like to discuss the frequency of future visits, please contact us before accepting the next period.
Do not promise extra services to soften the announcement unless the operation can actually supply them. If a customer prefers fewer future visits, agree the revised frequency and dates explicitly. That changes the service, rather than making the unchanged service cheaper.
Check the first affected invoices against the schedule and correct any mismatch promptly. The useful outcome is an informed choice and a deliverable promise, not merely a notice that was sent.
For a founder's perspective on the work inside a customer promise, read the opening of Infinite Upside. Its account of a car hobby becoming an operation makes that change in responsibility vivid.
Read alongside the book
Original commentary and discussion material. Read the full personal accounts in Infinite Upside: Building Wealth With Room to Live, by Vijay Sheth.
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