Price Increase Calculator

Find how many sales you could lose after a price rise and still earn the same.

Updated November 8, 2026. Runs in your browser; nothing you type is stored.

Why raising prices is less risky than it feels

The fear with any price rise is losing customers. But a price increase goes straight to profit, so you can usually afford to lose more sales than you would guess. If a product earns $20 profit and you raise the price by $5, every remaining sale earns 25% more. You could lose one customer in five and still take home exactly the same amount — with less work, less stock and fewer support requests.

This calculator shows that safety margin: the share of sales you could lose before a price increase leaves you worse off.

The formula

New price = price × (1 + increase %)
Profit per unit = price − cost
Sales you can lose = (1 − current profit ÷ new profit) × 100

Worked example

A product sells for $50 and costs $30, so it earns $20 a sale. A 10% increase takes the price to $55 and the profit to $25. 1 − ($20 ÷ $25) = 0.2, so you could lose 20% of your sales and still earn the same total profit. If you lose fewer than that, you come out ahead.

Tips for raising prices

• Raise prices on new customers first, or on new products, before changing what existing customers pay.
• Give notice to regular clients. A month's warning keeps goodwill.
• Pair it with an improvement when you can, such as faster delivery or better packaging.
• Watch the numbers for a few weeks. If sales fall by less than the calculator's result, the increase is working.

Frequently asked questions