The SDK: Lithuania's Owner Declaration Code

What the Code Actually Is

Lithuania runs two related but distinct records about your car.

The first is the one everyone knows: the registration. That is the plate, the registration certificate, the entry that says this vehicle is permitted on the road. The second, newer one is a record of ownership — who holds the vehicle right now, whether or not it is registered, whether or not it is roadworthy, whether or not it is being driven.

The SDK belongs to the second record. Regitra describes it as a new accounting system in which records of the owners of all vehicles are kept, and which assigns each vehicle a unique owner declaration code. The code is not a document you carry. It is an identifier the registry holds, and it is what the next transaction is checked against.

The distinction between the two records matters in one specific way. A vehicle can be deregistered — off the road, plates surrendered, no longer permitted in traffic — and still have an owner who must be declared. Ownership does not lapse because roadworthiness did. That is the gap the SDK system was built to close.

Why It Exists

Before May 2021, Lithuania's registry knew who a vehicle was registered to. That is not the same as knowing who owns it, and the difference was where the problems lived: a car sold three times without any of the buyers registering it, a vehicle abandoned by an owner nobody could name, a seller still receiving penalty notices for a car they parted with a year earlier.

Making the ownership record mandatory and universal — and putting a code on it that the next transaction must reference — closes that loop. Every transfer now has to be declared by both sides, and Regitra's system will not issue the new owner a code until both sides have acted.

It applies to every vehicle, not just cars. Regitra's rule covers all vehicle types — passenger cars, motorcycles, trailers and the rest. If it goes in the vehicle register, it has an SDK. Buying a trailer or a moped puts you in exactly the same process as buying a car, on the same deadlines.

Who Needs One

Regitra draws the line by residence and by where the transaction happens, and the two halves are not symmetrical.

Lithuanian residents and companies

• Every purchase and every sale
• Whether the counterparty is here or abroad
• Every vehicle type in the register
• Selling abroad still needs an SDK first

Scope: all your transactions, everywhere.

Foreign residents and foreign companies

• Transactions taking place in Lithuania
• Declare when registering the vehicle here
• Declare when selling the vehicle here
• Branch application, on the day of the transaction

Scope: narrower, but the channel is harder.

The narrower foreign scope is genuinely narrower: a foreign buyer taking a Lithuanian car home to Poland and registering it there is not caught by the obligation to declare the acquisition in Lithuania. Regitra states that foreign buyers need to declare only where the vehicle will be registered or sold in Lithuania.

The seller's side has no such relief. A Lithuanian seller must hold an SDK before selling abroad, exactly as before selling at home.

The Two-Sided Declaration

A declaration is not one act by one person. It is a submission and a confirmation, on separate clocks, and the second is performed by somebody who has already been paid.

1. Buyer submits — 5 days from the transaction

   You enter the acquisition with your identity card or passport and the purchase-sale contract, or the gift contract where the vehicle was a gift. Online through eRegitra, or at a branch with an appointment booked in advance.

2. Seller confirms — 5 days from your submission

   The seller reviews and confirms the data you entered. Free through either channel. This is the step that stalls.

3. New SDK issued

   Regitra's wording: the new owner is given a new SDK only after the buyer has provided and the seller has confirmed the data. One half is not enough.

4. Register — 10 calendar days from the declaration

   If the vehicle will be used in public traffic, register inside the window or Regitra deregisters it automatically. Full detail on registering a car.

How to Get One

There are exactly two channels, and they are not equivalent.

Online, through eRegitra. Free, available for the acquisition declaration, the seller's confirmation and the disposal declaration alike. It requires a Lithuanian electronic identity to log in, which in practice means an asmens kodas and either a bank login, a mobile signature or an ID-card certificate.

At a Regitra branch. Chargeable for the acquisition and disposal declarations, free for the seller's confirmation. Branch services run on appointments booked in advance rather than walk-ins.

The channel choice is often made for you. If you have no Lithuanian e-identity, the online route is closed regardless of what it costs. That is the ordinary position for somebody who has just arrived, has bought a car before completing their registration, and does not yet have a working bank login. Budget the branch fee and the appointment rather than discovering this at the deadline.

What It Costs

Almost nothing, if you use the internet.

Note the asymmetry on the middle row: the seller's confirmation is the one act that is free through both channels. Regitra charges the counter fee for the declarations that create or end an ownership record, and not for the one that merely agrees with a record somebody else created. A seller who does not use e-services therefore has no financial reason to delay.

Regitra's English-language pages publish the process but not the prices, so the figures above are from its Lithuanian price pages. An English-only reader will not find a fee on the page they are sent to.

Foreign Residents and Foreign Companies

Regitra's guidance for foreign residents is that the application is made at a branch office on the day the transaction is concluded, rather than online. The reason is structural rather than discriminatory: eRegitra authenticates against Lithuanian electronic identity, and a person who does not have one cannot log in to use the free channel.

What that means in practice

The day-of-transaction instruction is the one that bites. If you buy a car on a Saturday and Regitra's branches are shut, you are already outside the guidance before you have driven home — and the 5-day statutory window is still running in the background.

Getting an asmens kodas and a working e-identity early is worth doing for its own sake. It converts this from a scheduling problem into a five-minute task.

• Plan the branch appointment before the purchase, not after it
• Bring the passport and the signed contract to the same appointment
• Budget the counter fee rather than the free online price
• Do not assume the seller can complete your half for you

Foreign companies transacting in Lithuania are inside the same rule as foreign individuals. Regitra names both.

What Happens If You Skip It

Two consequences, and the second is much more common than the first.

You cannot transact. Regitra's own statement is that a person who does not declare a vehicle in accordance with the established procedure will not be able to sell it. This is not enforcement after the fact — it is a lock at the front of the process. An undeclared vehicle is one you own in fact and cannot dispose of on paper.

You can be fined. Regitra publishes the administrative penalties for failing to declare as €150.00–€300.00 for a first violation and €440.00–€600.00 for a repeat one.

The third consequence is the quiet one. Declare the change of ownership, then fail to register the vehicle within 10 calendar days where it is going to be used in traffic, and Regitra deregisters it automatically. No notice period is published; the deregistration is the outcome of the deadline passing.

No published penalty for the seller who does not confirm. The buyer's failure to declare has a published fine. The seller's failure to confirm, within their own five-day deadline, has none that Regitra prints. What its pages describe is the effect on the buyer: no confirmation, no new SDK, no registration. If you are the buyer, the person with the exposure is you, which is the opposite of what you would expect.

What Regitra Leaves to You

Regitra's own pages stop short in three places, and each one is something you have to handle yourself.

• There is no official SDK lookup. Regitra's English service pages tell a buyer to verify that the seller has an SDK before the transaction, but point to no public search tool for doing it. Third-party sites offer one, and an unofficial lookup is a poor basis for a code that gates a purchase. Ask the seller to show you the code from their own eRegitra account, in front of you.
• Nothing binds the seller to the five-day deadline. The deadline is published; no penalty for missing it is, and the consequence falls on you, because your new code is issued only after the seller confirms. Complete both halves of the declaration together, while the seller is still there.
• The seller's page says nothing about plates, insurance or residual liability. Regitra's "I have sold a vehicle" page covers the confirmation and its deadline and stops. Do not assume the transfer settles the number plates, the insurance policy or your exposure after the sale — deal with each of them yourself.

If you only remember one thing from this page: ask to see the SDK before you pay. It costs the seller nothing to have, it is Regitra's own step one, and its absence is the single clearest signal that a sale is not going to complete.