Learn how to build a crowdfunding goal from project costs, reward fulfilment, platform fees and a contingency before you launch.


A crowdfunding target is not simply the amount you need to make the product. It has to account for getting the campaign ready, paying platform and card fees, delivering rewards, and handling costs that are easy to miss while you are focused on launch. A goal built from those parts is easier to explain and gives you a more useful way to test the plan before asking people to pledge.
Start with the cash your project must cover. Add campaign preparation, reward fulfilment, platform and payment fees, and a clearly explained contingency. Subtract only funds you have committed and can use. Then check what happens if the number of supporters is lower or higher than your working assumption. The result is a planning target to review, not a promise that a campaign will reach it.
The free Crowdfunding Simulator combines project costs, pledge size, fulfilment and fee assumptions, then compares cautious, working and stretch cases.
Write down the cost of producing or delivering the project, then separate the work required to prepare and promote the campaign. Depending on the project, preparation may include prototypes, photography, samples, campaign copy, paid promotion or professional services. Use quotes where possible and mark estimates as estimates. A crowdfunding page is a public promise, so the more specific your cost basis, the easier it is to explain what the target will fund.
| Planning line | Illustrative amount | What to verify |
|---|---|---|
| Project or production cost | £6,000 | A current supplier quote or project budget |
| Campaign preparation | £900 | Samples, photography, content and launch work |
| Other reserve | £500 | Costs that are known but not in the main quote |
| 10% contingency on entered costs | £740 | The uncertainty the allowance is meant to cover |
| Confirmed own funds | −£500 | Cash genuinely available for these costs |
| Cost base before backer fulfilment and fees | £7,640 | No cost has been counted twice |

For a reward campaign, each additional backer can create an additional cost. Estimate what it takes to make, pack and deliver each reward, including packaging and postage. If reward tiers have very different costs, one average pledge and one average fulfilment value can hide the risk. Model the likely mix separately before you rely on a blended estimate.
Also think about where supporters are located and how that changes delivery costs. If you do not yet know the final amount, make the uncertainty visible in your contingency rather than quietly treating delivery as free. The right estimate is project-specific; a backer count alone does not tell you how much each reward will cost to fulfil.
Platforms can charge a percentage of funds raised, payment processing fees, a fixed amount per pledge, or a combination. Crowdfunder’s current UK fee page lists a 5% platform fee for for-profit projects and a transaction fee of 2.9% plus £0.30 per UK or EU pledge. Its published rates exclude VAT, which is added to listed fees where applicable. The card rate differs for non-EEA transactions, and charges can depend on project type. Treat these as a dated example, not a universal rate, and verify the terms for your campaign before launch. Read Crowdfunder’s current fee guidance.
A percentage fee reduces the amount left after funds are raised. A fixed charge per pledge means two campaigns with the same gross total can have different costs if they receive different numbers of pledges. If VAT is charged on fees, include it in the model where relevant. Do not assume VAT on pledges or rewards works the same way for every campaign. HMRC says the VAT treatment depends on the facts, including whether a supporter receives goods or services in return. Check HMRC’s crowdfunding VAT guidance and ask a qualified adviser about your project.
Using the figures above, the cost base after contingency and confirmed own funds is £7,640. Suppose an average pledge is £45 and making, packing and delivering each reward costs £8. For illustration, use Crowdfunder’s published UK for-profit rates: a 5% platform fee, 2.9% card processing and a £0.30 fixed transaction charge per pledge, with 20% VAT on both listed fee types where applicable. At roughly 237 supporters, fulfilment is about £1,896 and the fee allowance is about £1,096. The simulator rounds the working goal upward to the next £50, giving an illustrative planning target of £10,650.
The whole-supporter count matters. At 237 supporters giving an average of £45, the illustrative working scenario contains £10,665 in gross pledges, even though the rounded planning goal is £10,650. The app’s result explains the difference and estimates a small £33 surplus against the entered cost plan. Your actual pledge mix, VAT treatment, platform terms and delivery costs may change the result.

A contingency is a named allowance for uncertainty, not a substitute for research. If a supplier quote excludes packaging or a delivery estimate is still uncertain, say so in your working notes and choose a reasonable allowance. Keep it separate from confirmed costs. That makes it easier to revise the target when new information arrives and helps you explain why the campaign needs the amount it does.
Then subtract funds you have committed to the project and can genuinely use for these costs. Do not subtract hoped-for grants, match funding or sales unless the money is confirmed and available under the campaign rules.
Once you have a working target, ask what changes if you receive fewer pledges than planned. Would you still be able to deliver the rewards? What would happen to production, supplier commitments or refunds if the campaign does not meet its goal? The answer depends on the platform’s funding model and the promises you make, so verify the campaign terms before launch.

Try a cautious, working and stretch case, then change the multipliers to match evidence from your own audience or past launches. A scenario should help you see how costs and cash remaining change; it should not imply that any outcome is likely. Do not treat a warm-audience conversion assumption as a benchmark. Replace it with your own observed evidence when you have it.
| Scenario | Supporters | Gross pledges | Illustrative surplus or gap |
|---|---|---|---|
| Cautious, 70% | 166 | £7,470 | £2,266 gap |
| Working, 100% | 237 | £10,665 | £33 surplus |
| Stretch, 130% | 308 | £13,860 | £2,331 surplus |
These are arithmetic examples using the simulator’s default inputs, not fundraising benchmarks. The below-target gap assumes funds are received; an all-or-nothing campaign may return pledges when its goal is missed. Check the rules for your chosen platform before using a scenario to make delivery commitments.
Adjust the pledge, fee and fulfilment assumptions, then compare what a lower or higher supporter count would mean for the costs you entered.
For a broader view of the money around a new product business, read MLFG’s ecommerce startup budget guide. Keep the campaign target focused on the costs and commitments that the campaign itself needs to cover.
A crowdfunding target is strongest when you can trace it back to the work, cost and delivery commitments behind the campaign. Keep quotes, fee checks and assumptions together, revisit them when details change, and make the eventual funding goal clear to supporters.
Yes. Work out the amount you need after fees, then estimate the gross pledges required to leave that amount available. Check which fees apply to your platform, project type and payment method. Fees can change, so use a current source rather than an old campaign example.
There is no reliable percentage for every project. Base the allowance on named unknowns such as quote exclusions, currency exposure, packaging, delivery or production tolerances. Keep it visible and replace it with better information as you obtain quotes.
No. It calculates scenarios from the figures you enter. It cannot establish demand or predict the number of people who will pledge. Treat the cautious, working and stretch cases as questions for your plan, not forecasts.
Include the costs that grow with each reward: making or purchasing it, packing, postage, handling and any expected replacement or support allowance. If tiers differ, estimate the likely mix instead of relying on one average. Confirm delivery assumptions for each destination.
No. It is an educational planning tool. VAT depends on what the supporter receives and the facts of the arrangement. Review official guidance and get qualified advice for your own campaign before publishing a funding target.
Use the free Crowdfunding Simulator to turn your project costs, fees and fulfilment assumptions into a reviewable campaign scenario and downloadable plan. If you need help turning that plan into a store, compare MLFG’s ecommerce plans.
If you are weighing up a post-campaign store for backer rewards and future sales, see MLFG’s crowdfunded product ecommerce route. For help applying the plan to your project, talk with MLFG.
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