What ROAS do you need on a Kickstarter campaign? Real numbers

Someone in a founder Slack told me last week they’d been advised they needed “3x ROAS to be safe” on their Kickstarter campaign. I asked them what their COGS were. They didn’t know. They’d been given a benchmark without anyone checking the maths that actually mattered.

Here’s the thing. There is no universal target. 3x ROAS is a fine number if your margins are healthy. It’s an absolute disaster if you’re selling a low-margin gadget with an agency taking 10% off the top. As an official Kickstarter Expert Partner, I’ve watched founders burn five-figure ad budgets chasing a number a guru pulled out of thin air. So let’s do the actual maths, and I’ll point you at a free Kickstarter ROAS calculator at the end so you never have to guess again.

Break-even ROAS is the only benchmark that matters

Every other ROAS number in this article is meaningless until you know your own break-even. This is the point where an extra £1 of ad spend produces exactly £1 of profit. Below it, you’re paying to lose money.

The formula is straightforward:

Break-even ROAS = Tier price ÷ (Tier price – COGS – Kickstarter fees – payment processing – agency commission)

That denominator is what you keep from each pledge. Divide the full pledge by what you keep, and you get the multiplier your ads need to hit before you’re profitable.

Kickstarter takes 5%. Stripe processing runs around 3% + £0.20 on pledges over £10. So on a £35 pledge, you’re losing roughly £1.75 + £1.05 + £0.20, or about £3.00 in platform costs alone. Then subtract your COGS. Then subtract any agency cut. What’s left is your margin, and it’s what’s got to fund the ads.

If you want to sanity-check the fees side separately, I built a companion tool at /kickstarter-fees-calculator/ that breaks down every deduction on a raise. Pair it with the ROAS calculator and you’ve got the full picture.

Break-even ROAS by product margin

Here’s the same £35 reward tier at different COGS levels. All numbers assume 10% blended Kickstarter fees and no agency commission. This is the table you want pinned to the wall.

Reward tier	COGS	Margin after fees	Break-even ROAS
£35	£5.50	£26.00	1.35x
£35	£10	£21.50	1.63x
£35	£15	£17.00	2.06x
£35	£20	£11.50	3.04x
£35	£25	£6.50	5.38x

Look at what happens between £15 and £25 COGS. You go from needing 2x ROAS to needing over 5x. That’s not a rounding error. That’s the entire difference between a campaign that scales profitably and one where every ad quid you spend digs the hole deeper.

Most tight-margin products fail on Kickstarter because the founder never ran this calculation. They hit the funding goal, then discover during fulfilment that they’ve been paying to acquire loss-making backers for 30 days straight.

Realistic ROAS by campaign stage

Once you know your break-even, then and only then does it make sense to talk targets. In my experience running and advising campaigns, ROAS is not a single number across the 30 days. It moves.

Pre-launch (list building): 0.5x ROAS on a pledge basis, because you’re not measuring pledges yet. You’re measuring cost per email signup. Somewhere between £1.50 and £5 per lead is typical for product categories. Every one of those leads compounds into a launch-day pledge at a much higher effective ROAS, which is why founders who skip pre-launch look at their day-one numbers and wonder why nothing worked.

Launch day and week one: 3x to 5x is common, sometimes higher. Your organic list is converting on top of the ads, Kickstarter’s internal traffic is stacking, and the algorithm is rewarding your momentum. Do not confuse this with sustainable ROAS. This is the honeymoon.

Mid-campaign (days 8 to 22): The honest ballpark is 2x to 3x. This is where a lot of founders panic and pull the ads because the number looks worse than launch. That’s usually the wrong call. If you’re above break-even here, keep spending.

Final 48 hours: 3x to 5x spike again as urgency kicks in and stragglers convert. This is where a lot of the campaign’s overall profit gets made.

Blended across the whole campaign: 2.5x to 4x is the range I’d call a healthy result for most product launches. Below 2x and you’re likely losing money. Above 4x and you’ve either got an unusually strong product-market fit or you didn’t spend enough (which means you left pledges on the table).

Jellop’s own analysis of over 5,000 campaigns landed on a practical minimum target of roughly 2x to 2.5x with a safety margin. That matches what I see in the wild.

How agency commissions wreck your break-even

This is the section most agencies don’t want you to read. So let’s do the maths together.

Take that £35 tier with £10 COGS. Break-even ROAS without agency involvement is 1.63x. Manageable. Most product ads can hit that.

Now sign with an agency that takes 10% of pledge value. Your denominator drops from £21.50 to £18.00. Your break-even ROAS climbs to 1.94x. You need 20% more ad efficiency just to hit zero. Not to profit. Zero.

Add a £8,000 monthly retainer on top. If you’re targeting a £100,000 raise, that retainer is another 8% of pledge value. Now your break-even is closer to 2.5x, and the ad platform is still showing you the pre-agency number because Facebook doesn’t know your agency exists.

I’m not saying every agency is a bad deal. Some earn their cut, several times over. But if you don’t do this calculation before you sign, you’re not comparing agencies on merit. You’re comparing them on which one made the prettiest deck.

Not sure whether your margins can support ads at all? My £60 strategy call will run your numbers with you and tell you honestly whether to spend money on ads or focus that budget somewhere else.

Common ROAS mistakes that cost founders real money

I see the same errors made repeatedly. Here they are, in rough order of expense.

Optimising for cheap CPC instead of ROAS. A £0.30 click that never converts is more expensive than a £2 click that pledges. The ads platform will happily hand you cheap clicks all day. Cheap traffic and profitable traffic are not the same thing.

Killing ads too early. Meta’s algorithm typically needs 7 to 14 days to stabilise on a new campaign. Founders check the dashboard on day three, see a 1.4x ROAS, and switch everything off. Meanwhile the ads that would have hit 3x by day ten never get the chance.

Trusting first-touch attribution. Facebook takes credit for backers who would have converted anyway. Your true ROAS is total pledges divided by total spend, measured on the Kickstarter dashboard, not the ads platform. In my experience the platform-reported ROAS is 20 to 40% inflated versus actual.

Running the same target ROAS across all stages. Setting a 3x floor during pre-launch means you’ll spend nothing and end up with no email list. Setting a 3x floor mid-campaign means you’ll pull ads that are working. Your target has to move with the stage.

Ignoring pre-launch cost per lead. Every email signup pre-launch costs money, but that money isn’t wasted, it just shows up as a pledge on day one. If your day-one ROAS looks amazing, some of it is really pre-launch spend showing up later. Track the full picture.

What the calculator does that a spreadsheet doesn’t

I built /kickstarter-roas-calculator/ because I got tired of typing the same maths into strangers’ spreadsheets on strategy calls. It does three things a rough spreadsheet won’t.

First, it factors in Kickstarter’s actual fee structure including the payment processing tiers, not just a flat 10%. Second, it lets you toggle agency commission and retainer to see the real impact on break-even. Third, it produces the ROAS you actually need at the ads platform (which is higher than break-even, because you also need to profit).

Plug your tier price and COGS in. Adjust for your situation. Compare against what your agency or your gut is telling you to target. If the numbers don’t match, that’s a conversation worth having before you spend the budget.

For the fees side of the picture, /kickstarter-fees-calculator/ does the deduction breakdown so you know exactly what lands in the bank on any given raise.

The honest version

If you take one thing from all this, take this. The 3x ROAS rule is a soundbite, not a strategy. Your break-even ROAS depends on your COGS, your fees, and anyone you’ve paid to run your ads. Once you know that number, everything else is just tuning.

Set the budget you can afford to lose if it all goes sideways. Track the ROAS the platform gives you and adjust downward by 20 to 40% to get closer to reality. Move your target with the campaign stage. Don’t panic mid-campaign. Spend more in the final 48 hours than you think you should.

And for the love of God, run the calculator before you sign anything with a percentage in it.

Want a hand with yours?

If you’ve got a campaign coming up and you’re staring at ad budgets, agency proposals, or a spreadsheet that just isn’t adding up, the fastest way through is a £60 strategy call. I’ll run your numbers with you, tell you honestly what ROAS you should be aiming for, and flag any deals that are going to eat your margin before you sign them. That’s usually the difference between a campaign that funds and a campaign that funds and pays you back.