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IPFees

Fee calculation across 119 IP jurisdictions — and a place to try IPFLang, the language it runs on.

Continues the peer-reviewed IPFLang language: V. Bocan and V. E. Balas, “IPFLang: A Domain-Specific Language for Multi-Currency Regulatory Fee Computation with Static Verification,” IEEE Open Journal of the Computer Society, 2026. doi.org/10.1109/OJCS.2026.3726037

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Jurisdictions Fees Service Fees Currencies Modules

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Language Reference Formal Grammar API docs

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GPL-3.0 www.bocan.ro