Key takeaways
- Price is the most powerful profit lever most service businesses have, because the cost of delivering the work doesn't change when the price does.
- At a 40% gross margin, a 10% price rise lets you lose up to a fifth of the volume and still make the same gross profit.
- Underpricing is often a constraint in disguise: it fills your capacity with work that can't fund growth.
- Start with new clients, then existing clients with notice. Lead with value, not apology.
- Packages and fixed fees let you price on outcomes rather than hours.
Why does a small price change have such a big effect on profit?
When you raise prices, the cost of delivering the work stays the same, so almost every extra pound goes straight to profit. That makes price the most powerful lever most owners never pull.
Those studies were of large companies, but the effect is often stronger in service businesses, where people's time is the main cost and margins can be thin. A business with a 10% net margin that raises prices by 5% without losing volume increases its net profit by half.
How many clients can you lose and still be better off?
This is the question that stops most owners. The answer is usually "more than you think". If your gross margin is m and you raise prices by p, you make the same gross profit even if volume falls by p ÷ (m + p).
| Gross margin | 5% price rise | 10% price rise | 15% price rise |
|---|---|---|---|
| 30% | 14% of volume | 25% of volume | 33% of volume |
| 40% | 11% of volume | 20% of volume | 27% of volume |
| 50% | 9% of volume | 17% of volume | 23% of volume |
Read it like this: a business with a 40% gross margin that raises prices by 10% could lose up to 20% of the work affected and still make exactly the same gross profit, with less delivery time to provide. In reality, well-handled price rises rarely lose anything close to that, and the clients who leave tend to be the most price-sensitive and the least profitable.
What are the signs you're underpriced?
- You win almost every proposal you send. A very high win rate usually means you're leaving money on the table.
- You're fully booked but profit isn't growing.
- Clients rarely question your price, and some say it's "very reasonable".
- You haven't reviewed prices in more than a year while wages and costs have risen.
- Your best people are overloaded, but you can't afford to hire.
When capacity is full of underpriced work, pricing becomes the constraint holding back the whole business: there's no margin to hire, invest or market.
How do you raise prices step by step?
A seven-step price rise
- Know your numbers. Work out the true cost and margin of each service, including the time spent on admin, revisions and travel.
- Decide the rise using the table above, and set a limit on how much volume you're prepared to lose.
- Start with new clients. Quote all new work at the new price. It's the lowest-risk test and tells you how the market responds.
- Segment existing clients. Separate your most valuable clients, average clients and those who are unprofitable at today's price.
- Give clear notice. Typically 30 to 90 days in writing, with the new price, the date and the reason, framed around the value and service they receive. Check your contracts for notice terms.
- Talk to key clients personally. A short call before the letter keeps the relationship strong and surfaces any concerns early.
- Offer a choice, not a discount. For price-sensitive clients, offer a smaller package at a lower price rather than cutting the rate.
What should the message say?
Keep it short and confident: what's changing, when, and why it's worth it. For example: "From 1 February, our monthly retainer will be £2,750. Over the past year we've added [specific improvements], and this change lets us keep investing in the quality and responsiveness you rely on. Nothing else about your service changes. If you'd like to talk it through, I'm happy to." Don't apologise, and don't over-explain.
Should you charge hourly, by fixed fee or by retainer?
| Model | Works well when | Watch out for |
|---|---|---|
| Hourly | Scope is genuinely unknown or work is ad hoc. | Caps income at hours available, penalises efficiency, invites clients to watch the clock. |
| Fixed fee / package | The work is repeatable and the outcome is clear. | Scope creep. Define deliverables, rounds of revisions and what's extra. |
| Retainer | The client needs ongoing support or a defined monthly outcome. | Unused or overused capacity. Review the scope every quarter. |
Many service businesses get the best of both by packaging their core work at fixed fees priced on value, and keeping an hourly rate for anything outside scope.
We'll help you find out, and if it is, plan and run the change with you.
Frequently asked questions
How much should a service business raise its prices?
There's no single right number, but many service businesses review prices annually and raise them in line with costs and value delivered. Use the break-even maths: at a 40% gross margin, a 10% rise means you could lose up to 20% of the affected volume and still make the same gross profit. In practice most businesses lose far fewer clients than that, especially when the rise is explained well.
How do I tell clients about a price increase?
Give clear notice, typically 30 to 90 days in writing, explain the reason in terms of the value and service they receive, state exactly what changes and when, and offer a conversation for key clients. Avoid apologising or over-explaining. Confident, simple communication reduces pushback.
Will I lose clients if I raise my prices?
You may lose some, usually the most price-sensitive ones, who are often also the least profitable. The maths of a price rise means you can afford to lose a meaningful share of volume and still make more profit. The best protection is to raise prices alongside clear value, and to keep a lower-priced option for clients who need it.
Should a service business charge by the hour?
Hourly pricing is simple but it caps your income at the hours available and penalises efficiency. Many service businesses move to fixed fees, packages or retainers priced on the outcome and value delivered, while keeping an hourly rate for ad-hoc work. Scope each fixed fee carefully to avoid scope creep.
How does pricing affect profit?
Price falls straight to profit because the cost of delivering the work doesn't change. Research by Marn and Rosiello in Harvard Business Review (1992) found that for the average company in their study, a 1% price decrease would cut operating profit by 11.1%. The same leverage works in reverse when prices rise.
Sources and further reading
- Michael V. Marn and Robert L. Rosiello, 'Managing Price, Gaining Profit', Harvard Business Review (1992)
- Rafi Mohammed, The 1% Windfall (HarperBusiness, 2010)
- Quirk's, 'A marketer's guide to increasing prices' (cites McKinsey's S&P 500 analysis)
Last reviewed 19 October 2026
