What sources does Taxxa search?

Taxxa searches a continuously updated collection of more than one million pages from tax authorities, government publications, legislation and case law across the European jurisdictions it covers. Every response cites the underlying material, so a professional can inspect the rule, its jurisdiction and whether it is current before relying on the result.

Can Taxxa work with a team’s own documents?

Yes. Research can combine the public knowledge base with a team’s own PDF, DOCX, CSV and TXT files in one workspace. That makes it possible to compare a client document with the relevant guidance, trace a conclusion to its source and prepare a draft without losing the evidence that supports it.

Who is Taxxa built for?

Accountants, auditors, tax advisors, payroll specialists, bookkeepers and advisory teams working across European jurisdictions. Shared workspaces keep research available to colleagues, and citations make review easier.

Where is customer data stored, and is it used to train models?

Customer data stays in the European Union and is never used to train language models.

Does Taxxa replace professional judgement?

No. Taxxa is a research and drafting workspace. It helps professionals reach an informed starting point faster; the professional still reviews the evidence and makes the final decision. It does not file returns, post bookkeeping entries or give legal advice.

FinlandVero

Property-tax appeals for 2026 open until end of 2029

The 2026 property assessment can be appealed until 31 December 2029; the 2022 window has expired and stale spring-2026 correction guidance is removed.

By Taxxa AI OyPublished 2 November 2026

Tax

Owners who want to challenge their 2026 property assessment have until 31 December 2029 to file the oikaisuvaatimus appeal.Vero The deadline table on Verohallinto's property-tax appeal page has rolled forward: tax year 2026 enters with a 31 December 2029 deadlineVero, while tax year 2022 drops out after its 31 December 2025 deadline expired. The remaining windows read 31 December 2026 for tax year 2023, 31 December 2027 for 2024 and 2 January 2029 for 2025. The page's stale spring-2026 pre-appeal instructions, with the 14 April and 30 April 2026 correction deadlines for the 2026 assessment roundVero, are gone.Vero

An appeal can be filed only after the property taxation for the year has ended — for 2026, between June and October, or May for entities. The general rule is three years from the start of the year following the tax year. If the last day falls on a Saturday or Sunday, the deadline moves to the next business day. An appeal filed in OmaVero must arrive by 23:59 on the due date; a paper appeal must reach Verohallinto by 16:15. Both individual and business customers use the same guidance, and a paper filing goes on form 3353 or as a free-form application stating the appellant, the property identifier, the tax year, the change sought and its grounds.

The tax must be paid by its due date even when an appeal is pending; unpaid tax accrues late-payment interest. A payer in difficulty can seek a payment arrangement or a ban on enforced collection. Enforcement can be suspended in full, keeping the tax out of recovery, or limited, and interest still accrues during the suspension. If the appeal is rejected, the suspension ends and the unpaid tax may go to recovery. An appeal can always be filed at least within 60 days of receiving the decision, and Verohallinto may extend the correction period by one year, or six in highly exceptional cases.

Verohallinto may also correct an assessment on its own initiative within the same three-year window, for example on later-received information, producing either a refund or additional tax. Check the decision for the tax year, diary the table date, and file in OmaVero before the clock runs out. The rules are stated in Verohallinto guidance Kiinteistöveron oikaisuvaatimus, with the form-3353 filing requirements in Paperilomake 3353: Kiinteistöveron oikaisuvaatimus.

Diary the table deadline for the tax year and file the appeal in OmaVero before it expires.

Sources

FinlandVero

Property-tax appeals for 2026 open until end of 2029

The 2026 property assessment can be appealed until 31 December 2029; the 2022 window has expired and stale spring-2026 correction guidance is removed.

By Taxxa AI OyPublished 2 November 2026

Tax

Diary the table deadline for the tax year and file the appeal in OmaVero before it expires.