VAT explained: what it is and how it works for business

VAT (value added tax) is a consumption tax that a business adds to the price of goods and services, collects from the buyer, and pays over to the state. The final VAT burden lands on the end consumer, while companies act only as intermediaries: they collect output VAT, deduct the input VAT they have paid, and remit the difference to the tax authority. In Lithuania the standard VAT rate in 2026 is 21 %, with reduced rates of 9 %, 5 % and 0 % applying to specific categories. Below we explain how VAT works in practice, how to add it to and extract it from a price correctly, and when it pays to register for VAT voluntarily.

VAT is not a business expense in the way that salaries or rent are — it is money you hold only temporarily and must pass on to the state. Confusing it with your own turnover is where the most expensive bookkeeping mistakes are born.

What VAT is and why the end consumer pays it

VAT is an indirect tax on the value added at each stage of the supply chain. Unlike corporate tax, it is calculated not on the profit you earn but on the price of the good or service.

The principle is simple. Suppose a product passes through three hands:

1. A manufacturer sells raw material to a wholesaler for EUR 100 + EUR 21 VAT, and pays EUR 21 to the state.
2. The wholesaler sells to a shop for EUR 150 + EUR 31.50 VAT. From the EUR 31.50 collected it deducts the EUR 21 already paid and remits EUR 10.50.
3. The shop sells to a consumer for EUR 200 + EUR 42 VAT. It deducts EUR 31.50 and remits EUR 10.50.

At each link the state receives tax only on the value added at that stage. The full EUR 42 of VAT is ultimately paid by the end consumer, because they alone cannot deduct it. That is why VAT is called a consumption tax — it is genuinely borne by whoever consumes the product rather than reselling it.

This mechanism means that for a VAT-registered business VAT is usually neutral: what you collect on sales, you deduct on purchases, and only the difference stays with the state.

Lithuanian VAT rates: standard and reduced

Lithuania applies several VAT rates. The figures below are illustrative 2026 rates — the exact product and service groups and conditions are revised regularly, so always check the current thresholds on the State Tax Inspectorate (VMI) website.

• Standard 21 % — applies to most goods and services that do not qualify for a reduction.
• Reduced 9 % — typically applied, for example, to books and periodicals, passenger transport on set routes, district heating energy and certain other groups.
• Reduced 5 % — typically applied, for example, to reimbursable medicines and medical aids and certain non-periodical publications.
• 0 % rate — applies, for example, to exports outside the EU and supplies to VAT-registered businesses in other EU states; the seller charges no VAT but keeps the right to deduct input VAT.

It is important not to confuse the 0 % rate with exempt activity (for example, certain financial, healthcare or education services). Under the 0 % rate input VAT remains deductible; under exempt activity it generally does not.

If you are unsure which rate applies to your product or service, do not guess: the wrong rate means either overpaid tax or a VMI correction with late-payment interest.

How to add VAT to a price and extract it from a VAT-inclusive price

This is where most confusion arises, because the formula differs depending on whether you start from a price excluding VAT (net) or including VAT (gross).

Adding VAT (net price known)

• VAT amount = net price × 0.21
• Gross price = net price × 1.21

Example: a service costs EUR 500 net. VAT = 500 × 0.21 = EUR 105. The final price to the buyer = EUR 605.

Extracting VAT (only the gross price is known)

A common mistake is to subtract 21 % from the gross price. That is wrong, because the 21 % is calculated on the net price, not the gross. The correct formulas are:

• Net price = gross price ÷ 1.21
• VAT amount = gross price − (gross price ÷ 1.21), or more simply gross price × 21 ÷ 121

Example: your invoice shows EUR 605 including VAT. Net price = 605 ÷ 1.21 = EUR 500. VAT = 605 − 500 = EUR 105. Had you simply subtracted 21 % from 605 (i.e. EUR 127.05), you would have been off by nearly EUR 22.

These calculations recur every day when drafting quotes, issuing invoices and negotiating prices. To avoid reaching for a calculator each time, use our free VAT calculator — it both adds and extracts VAT from any amount. And if you are also working out profitability, the margin calculator helps so you do not mix VAT up with markup.

Output VAT and input VAT deduction: how payment to the tax authority works

This is the heart of VAT for a business. Every VAT-registered company tracks two amounts:

• Output (collected) VAT — the VAT it adds to its sales and collects from customers.
• Input (paid) VAT — the VAT it pays when buying goods and services for its operations.

At the end of the tax period (usually a month) the company files a VAT return and pays the difference to the tax authority:

VAT payable = output VAT − input VAT (deductible)

A monthly example:

• Sales of EUR 10,000 + VAT → EUR 2,100 of output VAT collected.
• Purchases (materials, services, equipment) of EUR 4,000 + VAT → EUR 840 of input VAT paid.
• VAT payable to the tax authority = 2,100 − 840 = EUR 1,260.

If input VAT exceeds output VAT (for example, in a month when you invested heavily in equipment), a VAT overpayment arises, which can be refunded or set off against future taxes.

For the deduction to apply, the purchase must be intended for taxable activity and supported by a proper VAT invoice. Entertainment, passenger cars and certain other costs carry deduction restrictions — another common mistake that only surfaces during an audit. Tidying up your bookkeeping flows and gathering invoices in one place sharply reduces the risk; we cover this in more detail in our accounting automation section.

The VAT invoice: mandatory details

A VAT deduction is invalid without a proper invoice, so the required details are not a formality. A typical VAT invoice must include:

• the document title "VAT invoice" and a unique sequential number;
• the issue date;
• the seller's and buyer's details: names, addresses, company codes and VAT identification numbers;
• the name, quantity and unit of measure of the goods or services;
• the net price, the VAT rate applied (e.g. 21 %) and the VAT amount;
• the total payable including VAT.

When the 0 % rate or reverse charge applies, the invoice must carry the relevant note (for example, that VAT is accounted for by the buyer). Invoices must be retained for the statutory period, and your ability to claim the deduction depends directly on whether they are filed in good order.

Issuing dozens of invoices a month by hand makes errors in the details inevitable. That is exactly why many Lithuanian companies link VAT invoicing to their accounting system and automate the invoicing flow — the rate, VAT code and amount are filled in automatically, with no re-typing.

When it pays to register for VAT voluntarily

VAT registration is mandatory once the consideration for goods supplied and services rendered over the last 12 months exceeds the statutory threshold (an illustrative 2026 figure is EUR 45,000; the exact threshold and conditions are set out on the VMI website). A separate, lower threshold applies to acquisitions of goods from other EU member states.

However, you may also register voluntarily before reaching the threshold. This pays off when:

• Your customers are themselves VAT payers (B2B). Your VAT is not a cost to them because they deduct it, while you in turn get to deduct your input VAT.
• You invest heavily in goods or equipment carrying VAT. Voluntary registration lets you recover input VAT — especially relevant when starting up or expanding.
• You want a professional image. Larger partners often expect to work with VAT-registered suppliers.

Voluntary registration does not pay off when you sell to end consumers (B2C) who cannot deduct VAT. Then VAT simply raises your price by 21 % or eats into your margin — which is why many small service providers working with private clients deliberately stay outside the VAT system for as long as their turnover allows.

A short rule of thumb: if you mostly sell to businesses and buy with VAT, registration is usually worthwhile; if you sell to individuals, it usually is not.

How to calculate VAT quickly with a calculator

Instead of formulas, you can use a tool every time. With the VAT calculator you just enter an amount and choose whether to add or extract VAT:

1. Enter the amount (e.g. EUR 605).
2. Choose the rate (21 %, 9 % or 5 %).
3. Choose the action: add VAT to the amount, or extract it from a VAT-inclusive amount.
4. You get the net price, the VAT amount and the gross price.

All your business calculations — from VAT to take-home pay and margin — live in one place in our free calculators section.

Disclaimer: the rates, thresholds and examples in this article are illustrative (2026) and provided for general information. VAT rules change and exceptions may apply to your situation, so always verify the current rates, registration thresholds and invoice details on the VMI website or consult your accountant.

Would you like VAT invoices to be issued and sent automatically, with no errors in the details? Book a free consultation — together we will review your invoicing and accounting flow and show you what can be automated this very month.