The master file gives tax administrations a group-level picture: structure, intangibles, intercompany financing and consolidated financial position. The local file documents the local entity's controlled transactions in detail — amounts, counterparties, functional analysis, method selection and benchmarking. Under Dutch rules, groups above the consolidated revenue threshold must have both in the administration by the filing date of the corporate income tax return, per financial year.
Transfer pricing documentation fails on data far more often than on economics. The functional analysis is usually fine; the transaction schedule does not reconcile to the ledger, the counterparty split does not match the intercompany reconciliation, and last year's numbers were rebuilt by hand.
Treating the local file as a reporting deliverable sourced from the ledger — rather than an annual writing exercise — removes most of that risk and most of the cost.
Everything above rests on one schedule: controlled transactions by category, counterparty and amount, reconciling to the ledger. If that schedule is produced from the intercompany reconciliation rather than assembled at year-end, documentation stops being a project.
The master file describes the group: structure, value drivers, intangibles, intercompany financing and the global transfer pricing policy. The local file covers the local entity's controlled transactions, the functional analysis and the benchmarking supporting the arm's length outcome.
Master file and local file obligations apply to groups with consolidated revenue of at least EUR 50 million; country-by-country reporting applies from EUR 750 million.