Insights
Essays for people who run real companies
Slow, plain-language writing about a fast subject: what artificial intelligence, autonomous software agents and single-repository infrastructure actually change about how a business is built, run and led. Written for decision-makers, not engineers.
Essay · Agentic business
The Company That Fits in One Repository
A single operator in Vilnius runs the whole stack — website, a database of half a million companies, an AI sales engine — by directing agents rather than hiring. What that means for anyone who still measures a business by its headcount.
Guides
Invoices in Lithuania
Practical guides to issuing invoices in Lithuania: what the law requires, worked examples and the official sources.
- Main guide
Invoices in Lithuania: requirements and how to issue one
An invoice in Lithuania records that goods were sold or services supplied. This guide lists the required information, shows a worked example and gives the steps, with references to the legal texts.
11 min Business certificate in Lithuania: invoice or receipt, example
The holder of a Lithuanian business certificate documents a sale with the purchase–sale receipt FR0508; an invoice is allowed but not required. We show a filled-in invoice and receipt for the same order.
11 minCredit and debit invoices in Lithuania: rules and examples
A credit invoice adjusts an invoice already issued when the value, the quantity or the amount payable changes. A debit note is issued by the buyer. Three worked examples and the required information, with references to the law.
10 minInvoice in English for a foreign company: Lithuanian rules
How to invoice a foreign company from Lithuania in Lithuanian and English. A bilingual example, the invoice terms in both languages, and what the legal texts actually say about language.
10 minInvoice numbering in Lithuania: series, number and the rules
You choose the series yourself; the numbers must ascend and must not repeat within the same series. We show three invoices issued in a row and explain what the legal texts leave open.
9 minInvoice payment terms in Lithuania: what the law says
A payment due date is not required information on a Lithuanian invoice; the parties agree it. This guide covers what the legal texts say, how to word the term, and a sample reminder.
9 minInvoice to a private person in Lithuania: when and how
You may invoice a private person in Lithuania. Whether you must depends on who you are and whether you hand over a cash register receipt. On an ordinary invoice the buyer’s name and personal code appear only at the buyer’s request.
10 minInvoice without VAT in Lithuania: example for non-VAT payers
A seller who is not registered for VAT in Lithuania issues a document called an invoice, with no VAT rate and no VAT amount. This guide gives a filled-in example and the required information, point by point.
10 minPro forma invoice in Lithuania: what it is, with an example
A pro forma invoice is a request to pay in advance. We explain what Lithuanian legislation does not say about it, when an advance received needs a VAT invoice, and show a filled-in example.
8 minSelf-employed invoice in Lithuania: example and requirements
A filled-in invoice example for self-employment under a Lithuanian individual activity certificate, with what the legal texts say about it: required information, the seller's number, numbering and the journal entry.
8 minVAT invoice in Lithuania: required information and an example
What Article 80 of the Lithuanian Law on VAT requires on a VAT invoice and how it looks on a completed document. With a worked example and links to the text of the law.
8 min
Northwestern Solutions builds and operates AI systems for established Lithuanian companies — and runs its own entire stack the way these essays describe. If a piece here changed how you see your own operation, the services page shows where a first step could begin.