UGC return on investment: the ROI sum, ledger and break-even for one England asset

ROI is not engagement divided by a marketplace fee. For one English brand commissioning one short-form creator asset, it is a three-line sum: reviewed contribution, whole-life cost, and the gap between them as a share of cost. The sum is short. The inputs take the work, and both stay blank without evidence.

What to take away

Fix four things before any sum

Fix the decision, baseline, identity and timing before calculating anything. Each one stops the sum being rebuilt around the results once they arrive. Record them once, in blank fields, and let a named reviewer sign them off.

Name the decision, the eligible product and customer population, England geography, asset, authorised channels, observation period and alternative. The baseline might be no new asset or another buyer-approved route, but it cannot be invented after seeing results. Record concurrent promotions, price changes, paid media, availability and other influences.

Identity and timing come next. Reconcile the commissioned asset version, publication record, paid placement, order or other outcome unit, cancellations and returns. State the timezone and cut-off. If the buyer cannot join these records without guessing, report the gap rather than treating unmatched events as either success or zero.

Three formulas, one currency

ROI compares a reviewed contribution with the whole-life cost of the commission. Define contribution first, because gross revenue, reach and engagement are not substitutes for it. All three formulas must match in currency, VAT treatment, period and included costs.

incremental retained contribution = {causally attributable revenue or other value} - {incremental variable costs attached to that value} - {returns, cancellations or leakage within the defined period}

whole-life commission cost = {supplier} + {creator consideration} + {production} + {rights} + {media} + {buyer labour} + {specialist review} + {remediation} + {exit}

ROI = ({incremental retained contribution} - {whole-life commission cost}) / {whole-life commission cost}

Avoided cost needs its own baseline, resource owner and evidence that the saving was realisable rather than theoretical. Where a figure is missing, its field stays blank and the formula stays unresolved. A blank is not a zero.

Build the whole-life ledger

The denominator is the whole-life cost, not the marketplace fee. It has nine rows: supplier, creator consideration, production, rights, media, buyer labour, specialist review, remediation and exit. A row left out makes the ROI look better than the commission was.

Supplier type changes the fee structure. A platform marketplace such as TikTok's Creator Marketplace, which England brands use, prices each creator asset individually. An England agency supplier such as The Social Shepherd prices by project scope.

Fill each row from a written quote or record, never an assumed rate. The England figure turns on creator count, deliverable volume, usage rights, territory and media term. The budget template shows how each row moves through cost states, and hidden costs lists the work that sits outside a first quote.

Both sides of the sum must use the same VAT treatment. The standard VAT rate is 20%, and it applies to creator and agency fees where the supplier is VAT-registered. Input VAT is recoverable only with a valid VAT invoice for the supply. HMRC's rules decide the treatment, and a named accountant and tax adviser confirms which applies.

A worked example from Leeds

A Leeds homeware retailer commissions one short-form video from an England creator, licensed for 12 months on Instagram Reels and paid social. Contribution is reviewed from an England geo holdout against a matched control. The figures are illustrative only.

The three nil rows are a feature of the illustration, not a rule: a real ledger confirms each one from a record. Causally attributable incremental revenue was £6,300. Incremental variable cost, at 40 per cent for goods, delivery and payment fees, was £2,520, and returns and cancellations inside the 30-day window were £630.

Reviewed incremental retained contribution is £3,150: £6,300 less £2,520 less £630. ROI is (£3,150 - £4,200) / £4,200, which is minus 25 per cent.

Break-even is the contribution at which ROI is zero, and that equals the whole-life cost of £4,200. The example reaches £3,150, so it falls short. Paid media is £3,000 of the £4,200, so the media line moves the result more than any other row.

Which values may enter the numerator

Only causally attributable value belongs in the numerator. A platform-attributed conversion is not incremental merely because it appears in a report, and a before-and-after change without a credible comparison supports monitoring, not a causal return claim.

Label each value as an observed record, platform attribution, association, causal evaluation or scenario, as the measurement guide sets out. Choose an evaluation design before reading the outcome where feasible. Record eligibility, allocation or comparison logic, sample losses, contamination, concurrent activity and the analysis version. If a controlled design is disproportionate or impossible, narrow the decision and state that incrementality remains unresolved.

HM Treasury's Green Book is the government's guidance on appraisal, the process of assessing the costs, benefits and risks of different options for achieving government objectives. It is public-sector guidance rather than a private marketing rule, but the same separation of costs, benefits and risk sits behind a complete ROI denominator.

Count reuse only inside its boundaries

Reuse value needs boundaries. Specify the right, channel, territory and period that permit reuse, then record actual approved use. Do not capitalise hypothetical future placements or count the same contribution in several scenarios. A rights expiry, takedown or correction can change both the benefit period and the cost ledger.

When the sum stays on HOLD

The present verdict is HOLD. There is no configured asset, baseline, complete cost ledger or causal result. A named statistician or evaluator, finance owner, accountant and tax adviser must approve the inputs and interpretation before any return claim is published.

Show missing data, duplicate attribution, late conversions, return window, measurement coverage, model version and sensitivity to each material assumption. Keep privacy and PECR authority (the ICO's remit), advertising evidence and rights permissions as separate gates. A positive calculation cannot cure a failed one.

Under the ASA CAP Code, a paid creator post must be obviously identifiable as advertising, so the asset needs a clear ad label. The buyer also sets blank thresholds for minimum evidence coverage, decision sensitivity and review escalation, and publishes who owns each and what follows a breach.

Before you act

Common questions

Can a platform-attributed conversion be called incremental?

No. Platform attribution assigns credit under a stated rule or model, and a platform-attributed conversion should not be labelled incremental merely because it appears in a report. Causal evaluation estimates the difference against a defensible counterfactual.

What is break-even in the worked example?

Break-even is £4,200 of reviewed contribution, equal to the whole-life commission cost. The example reaches £3,150, so it falls short of break-even and ROI is minus 25 per cent.

What belongs in the whole-life commission cost?

Supplier, creator consideration, production, rights, media, buyer labour, specialist review, remediation and exit. Currency, VAT treatment, period and included costs must match the contribution side, and gross revenue, reach and engagement are not substitutes.