Return on marketing investment (ROMI) answers the sober question: did every euro spent on marketing bring in more than it cost? Unlike ROAS, which only compares revenue with advertising spend, ROMI deducts the contribution margin — and thereby shows what is actually left as profit at the end.
A positive ROMI means the marketing investment pays for itself. Negative means the contribution margin from the attributed revenue is not yet sufficient. For strategic measures with a longer impact curve (brand, PR, content), it is important to choose a sufficiently long observation period — otherwise every good investment looks bad at first.
Rule of thumb: in B2B, mid-sized industrial companies frequently see ROMI values of 30–120% for classic performance measures; content and brand investments usually need 12–24 months before ROMI turns positive. The calculator below shows where you stand.