The open Guides

Open Guides for the AI you already use

Read our accounting and tax Guides, check their sources, or use them with your AI. Each Guide shows its author and whether another accountant has checked its method.

Authorship and an independent check are different. Check the applicable period and official sources before using a figure.

1893 Guides · 60 matching · 245 jurisdictions

What the authorship and review labels mean

Checked by an accountant: — An accountant other than the author reviewed the method of this version — which rules apply, in what order, under what conditions — and publicly stands behind it. Individual figures carry the official source as their authority.
Accountant-authored: — Built and published by a named accountant approved on OpenAccountants. The Guide states what we hold on them: a published licence number, or that their credentials are self-declared. Not yet independently attested.
Team-built or unapproved: — Built by our team or awaiting approval. No independent accountant check is recorded.

GLOBAL · 60 Guides

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Name	Domain	Jurisdiction	Status
EU Reverse Charge Built by Michael Cutajar and the OpenAccountants team A cross-border B2B service transaction occurs between EU member states…	VAT / GST	GLOBAL

Showing 51–60 of 60 Guides

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1893 Guides across 245 jurisdictions. You do not need to cover an entire country. Publish a Guide within your expertise, under your name, and colleagues attest to the ones they stand behind.

GLOBAL

60 Guides

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Jurisdiction page

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