---
title: "Break-even conversion lift: definition and formula"
description: "How much more an offer has to convert to earn, per visitor, what another offer earns: the gap a cheaper offer, a gift or a discount must close."
url: https://offersuite.io/glossary/break-even-conversion-lift
updated: 2026-10-13
---

# Break-even conversion lift

How much more an offer has to convert to earn, per visitor, what another offer earns: the gap a cheaper offer, a gift or a discount must close.

## In plain words

The break-even conversion lift is the increase in conversion rate an offer needs to earn as much per visitor as another. It turns a cost into a target. A free gift doesn't raise the price, so it has to earn its cost back in buyers, and the lift says how many more buyers that takes.

A negative lift reads the other way round. It is how much conversion an offer can lose and still earn as much, which is usually the case for a bundle that earns much more per order.

## Formula

- Lift = baseline margin per order ÷ candidate margin per order − 1
- Candidate conversion needed = baseline conversion × (1 + lift)

## Worked example

Adding a mug to the $40.00 bag drops its margin from $15.36 to $10.91. The engine's lift is 40.8%: the gift has to bring that many more buyers, relative to today's conversion, to break even.

A small order can't carry a gift easily, because the gift's cost is a large share of its margin.

### The example order

A $40.00 bag of coffee, shipped free, every cost counted

Revenue $40.00 to contribution margin $15.36 (38.4%)

Revenue

$40.00

Cost of goods

−$12.00

Pick and pack

−$1.18

Packaging

−$0.50

Shipping label

−$7.50

Card fee per order

−$0.30

Refunds

−$2.00

Card processing

−$1.16

Contribution margin

$15.36

2 declared kinds cost nothing on this option

Computed by the margin engine in Offer Suite's own code, in whole cents, from a $40.00 bag of coffee with a $12.00 unit cost.

## A break-even lift is not a forecast

It says what an offer would have to achieve, not what it will achieve. Whether conversion actually rises by that much is what a split test measures. A large break-even lift is still useful before any test: an offer that needs 40% more buyers rarely gets them, and a test sized to detect 5% won't settle it either way.

## Using it

Compute it before you build a test. If the lift an offer needs is larger than any lift you have seen from a change of that kind, the offer is unlikely to win, and it is cheaper to redesign it than to test it. If the lift is small, or negative, the offer can win without converting better, and the test only has to show it doesn't convert much worse.

## In Offer Suite

Offer Suite's simulator reports this lift for a draft against the live version of an offer, at the conversion each option has today.

## Related

- [Glossary **Glossary of offer economics** The terms behind offer profit, defined plainly with their formulas and a worked number: contribution margin, profit per visitor, break-even lift and more.](https://offersuite.io/glossary)
- [Calculator **Gift with purchase profit calculator** What a free gift costs per order, after its unit cost, its extra pick and its handling, and how much conversion it has to add to pay for itself.](https://offersuite.io/calculators/gift-with-purchase-profit)
- [Calculator **Offer option calculator: profit per visitor** Compare up to three offer options on profit per visitor, margin per order times conversion, and see the conversion lift each one needs to match the best.](https://offersuite.io/calculators/offer-option-profit-per-visitor)
- [Calculator **Bundle pricing calculator: shipping, subscriptions** Price a bundle against a single unit, one-time and subscribed, with the shipping and pick costs it saves, and the conversion it can lose and still earn as much.](https://offersuite.io/calculators/bundle-pricing)
- [Glossary **Profit per visitor: definition, formula and example** The profit an offer earns for every visitor who sees it: margin per order times conversion rate. It weighs a lower price against more buyers fairly.](https://offersuite.io/glossary/profit-per-visitor)
- [Glossary **Conversion rate: definition, formula and example** The share of visitors who buy. An offer test's most reported number and its least sufficient: a better-converting offer can earn less.](https://offersuite.io/glossary/conversion-rate)