Integrations

Augments arvio.ee and Synx. Replaces nothing.

Kirje is an AI layer on top of e-Financials, the free tool 30,000+ Estonian companies already use. If you use arvio.ee or Synx, we augment — never replace.

What we connect

  • e-Financials (RIK) — entries posted directly
  • arvio.ee — Kirje can import and propose parallel drafts
  • Synx — same one-way sync
  • Stripe / Wise / Revolut — automated CSV watch
  • e-MTA — deep link to your KMD return
  • Public API — every entry is auditable from outside
Read the integration docs
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How the rules stay current

We encode the Estonian VAT Act, ARIB guidance and RIK e-Financials schema. Updates ship automatically — no manual re-reads.

  • Auto-remembered across all your companies
  • Manual override on every line
  • Audit log of every change
See review feed
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Integrations

Try it.

Kirje is an AI layer on top of e-Financials, the free tool 30,000+ Estonian companies already use. If you use arvio.ee or Synx, we augment — never replace.

Integrations · Kirje — AI-native bookkeeping for Estonian companies