Tvarka guides
Electronic signatures, ADOC, ASiC-E, PDF handling, automated bookkeeping, due diligence and register tasks. Every guide cites its sources and carries an FAQ and structured data for search.
Updated: 2026-08-28
What the qualified tier actually means under eIDAS, when you need it, and how it differs from the simpler electronic signatures.
A practical guide to choosing, whether you need to sign quickly, cheaply, or without buying any hardware.
Tvarka.pro is the first electronic signature service in Lithuania where you can sign contactlessly with your national ID card.
When you need the Tvarka QES Bridge, how it relates to a USB token or eID card, and what matters about PIN safety.
When a pile of contracts or invoices is waiting, Tvarka Sign lets you work the selected documents as a single queue.
Tvarka Sign can send a document to someone who does not work in your organisation in Tvarka. They sign with their own means.
Verification answers two questions: who signed, and whether the document changed after it was signed.
The internal Tvarka e-signature can be convenient inside an organisation, but it is not a qualified electronic signature.
The Tvarka Sign upload path checks the file type, the size, duplicates, and the state of signed containers.
What the EUDI wallet is, the honest state of the rollout, and what it will mean for qualified electronic signatures across the EU.
From 23 February 2027 public sector bodies have to recognise five EU signature formats. What changes, which deadlines apply, and what it means for ADOC.
Tvarka Sign prepares a signable PDF or PDF/A automatically when you upload something that is not a PDF.
When a contract, its annexes and a few scanned pages have to become one signable file, use the Tvarka PDF merge wizard.
PDF/A helps make sure that a document will look the same in years as it did on the day it was signed.
ADOC is the Lithuanian electronic document container. If a Lithuanian counterparty or authority has sent you a .adoc file, this is what it is and what to do with it.
ADOC is the container Lithuanian institutions ask for; ASiC-E is the European standard container for signed files.
The Tvarka ADOC wizard helps you prepare a single ADOC container from a main document and its annexes.
Tvarka Buhalterija is built for small, simple companies where the routine is mostly invoices, payroll and monthly returns.
Tvarka Buhalterija issues your invoices and reads incoming ones from a PDF or a photograph.
Tvarka Buhalterija gathers the monthly accounting cycle into one flow: prepare, review, sign, file.
Tvarka Buhalterija is aimed at the simple, repeating payroll case in a small company.
Tvarka Due diligence helps you check a counterparty before a transaction: legal entity data, court cases, property and other primary sources.
Lithuanian anti-money-laundering law allows a client to be identified without being physically present when they sign with a qualified electronic signature. Why it works, what evidence has to be kept, and what the method does not cover.
Tvarka shows and maintains the data held about a legal entity: its managers, members, shareholders and beneficial owners.
Tvarka Due diligence can bring Real Property Register data into a check on a counterparty or on an asset.
Tvarka Due diligence helps you watch your own company's cases and, on request, check the case history of clients, suppliers or partners.
Tvarka joins up reviewing register data, preparing the filings and tracking the deadlines in one flow for a legal entity.