If you've ever finished a cake, added up what you spent, and realised you basically worked all weekend for £30 — this article is for you. There's a formula, it's not complicated, and once you use it you'll never quote by "gut feeling" again.
The formula, in plain English
Every professional bakery in the country uses some version of this. It has four moving parts. Get any one of them wrong and your prices will feel "off" — usually in the direction of you making no money.
Part 1 — Ingredients
Cost every ingredient at your usual supermarket's actual pack price, then work out the pence-per-gram (or per-egg, per-ml) rate. Add up exactly what the recipe uses. Yes, including the pinch of salt.
Two rules that catch most bakers out:
- Buttercream and fillings are ingredients too. Not "extras" you throw in — they cost real money. A 500g pot of Belgian chocolate ganache uses £4+ of cream and chocolate.
- Decorations count. Gold leaf, edible flowers, cake toppers, wafer paper, isomalt shards — none of it is free.
Part 2 — Labour
This is the number 90% of home bakers forget or shortchange. Your time is the biggest cost in every cake — usually 5x the ingredients — and if you don't charge for it, you're not running a business, you're running a very expensive hobby.
Track a full cake, honestly, once. Include:
- Customer enquiries, WhatsApp back-and-forth, taking the deposit
- Shopping trips (yes, even to Tesco after work)
- All prep, baking, cooling, decorating
- Cleaning up — every wash-up, every wiped surface
- Boxing, delivery, driving
Then pick a rate. In the UK in 2026:
| Rate | What it means |
|---|---|
| £12.21/hr | National Living Wage (over 21) — the absolute floor |
| £15/hr | Sensible starting rate for a home baker in year 1–2 |
| £18–£25/hr | Fair rate for a skilled decorator who takes bookings months in advance |
| £30+/hr | Established business with a reputation and full order book |
Whatever rate you pick, use it for every hour. Including the drive to Sainsbury's for double cream you forgot.
Part 3 — Overheads
Overheads are the costs that don't sit inside any one cake but exist because you're running a baking business at all. Split them across your yearly cake count and add a small figure to each quote.
- Electricity/gas for a two-tier bake: ~£0.60
- Packaging (box, board, dowels, cellophane): £3.50–£6
- Delivery mileage at HMRC 45p/mile: whatever your round trip is
- Your slice of insurance, food-hygiene, website, phone: £3–£5
For most home-baked celebration cakes, overheads land somewhere between £10–£20 depending on delivery distance and packaging.
Part 4 — Margin
Cost is what you'd break even on. Margin is what makes it a business.
Margin is expressed as a percentage of the selling price, not the cost. That's why you divide by (1 − margin) rather than multiplying by "1 + margin".
Quick maths
If your cost is £100 and you want a 40% margin:
£100 ÷ (1 − 0.40) = £100 ÷ 0.60 = £166.67
Sell at £166.67, and your £66.67 profit is exactly 40% of the price. That 40% is what pays for the quiet weeks, the broken KitchenAid, and — eventually — a proper commercial kitchen.
Sensible margins for home bakers:
- 25–30% — hobbyist testing the water
- 35–45% — home baker with regulars
- 50–60%+ — full-time or serious side business
QuoteBake does this maths automatically
Set your margin, we handle the sums. Every ingredient, every hour, every overhead.
Try QuoteBake free →The formula in action — three real examples
Half-batch of 24 vanilla cupcakes
Ingredients £6.40 · Labour 3 hrs × £15 = £45 · Overheads £5 · Cost = £56.40
At 35% margin: £56.40 ÷ 0.65 = £86.77 → charge £87 (£3.63/cupcake)
Single-tier 8" birthday cake with buttercream drip
Ingredients £14 · Labour 5 hrs × £15 = £75 · Overheads £12 · Cost = £101
At 40% margin: £101 ÷ 0.60 = £168.33 → charge £169 (£8.45/portion for 20 portions)
Three-tier wedding cake, 100 portions
Ingredients £62 · Labour 22 hrs × £20 = £440 · Overheads £45 · Cost = £547
At 50% margin: £547 ÷ 0.50 = £1,094 → charge £1,095 (£10.95/portion)
Notice how the labour figure dominates in every one? That's why "gut feeling" pricing fails. Your gut doesn't count hours.
What if the customer says no?
Some will. Especially at first, especially if you've been quoting half-price for years. But the customers who value your work will pay it, and one £270 cake beats three £90 cakes every single time — the maths says so, but so does your Sunday afternoon.
The goal isn't to charge the highest price you can. It's to charge the price your work is actually worth. This formula gets you there.
Want to skip the spreadsheet? QuoteBake runs this exact formula for you, live, every quote. First five are free.