Trade Fair Participation Budget Planning: The 1:3 Rule and AUMA Benchmarks

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1. 16 July 2026 · corrected by Utku Kavakli

   The '1:3 rule' (total budget equals roughly three times space rental) is a convention popularized by the US publication EXHIBITOR Magazine's annual budget survey, not a rule that AUMA (the German Association of the Trade Fair Industry) has codified or published. The article repeatedly and specifically attributes the rule's derivation and codification to AUMA's decades of exhibitor-cost surveys, which could not be verified and appears to misattribute a different organization's industry convention to AUMA. This sentence continues the unverified attribution, stating as fact that AUMA derived the specific 1:3.0-1:3.4 / 1:2.5-1:2.8 / 1:3.8-1:4.5 / 1:4.5-1:5.5 bands from its own continuous exhibitor-cost surveys. No such AUMA-published ratio bands could be located.

   Before

   AUMA, the Association of the German Trade Fair Industry, has codified this ratio as the 1:3 rule: every euro of space rental triggers approximately three additional euros across the other budget lines.

   After

   Industry practice commonly applies a 1:3 rule of thumb: every euro of space rental triggers approximately three additional euros across the other budget lines. This convention is widely used in exhibitor cost-planning guidance, though it is not a rule specifically published by AUMA.

   Why: 2 issues fixed: The '1:3 rule' (total budget equals roughly three times space rental) is a convention popularized by the US publication EXHIBITOR Magazine's annual budget survey, not a rule that AUMA (the German Association of the Trade Fair Industry) has codified or published. The article repeatedly and specifically attributes the rule's derivation and codification to AUMA's decades of exhibitor-cost surveys, which could not be verified and appears to misattribute a different organization's industry convention to AUMA. | This sentence continues the unverified attribution, stating as fact that AUMA derived the specific 1:3.0-1:3.4 / 1:2.5-1:2.8 / 1:3.8-1:4.5 / 1:4.5-1:5.5 bands from its own continuous exhibitor-cost surveys. No such AUMA-published ratio bands could be located.

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