In short: Buying a shelf company is a share transfer from the formation agent to you. Bolagsverket registers the new name and board — but the share register does not update itself. Record buyer, seller, number of shares, share numbers, price and date at the time of purchase. If you register a brand-new company instead, Sweden's Companies Act requires you to keep a share register from day one.
Breakit recently published a guide to starting a new limited company in 2026, written by former co-founder Olle Aronsson as he starts his own one-person company. The guide walks through three practical choices every new founder faces: which bookkeeping service to use, whether to buy a shelf company (lagerbolag) or register a new one from scratch, and which bank to open a business account with.
All three are good questions. But between “buy shelf company” and “get bank account”, there is a step that's easy to skip past — and it's the one that makes the other two work: updating the share register.
What actually happens when you buy a shelf company
A shelf company (lagerbolag) is a limited company that a formation agent registered in advance and left dormant, ready to sell. When you buy it, the company already exists in Bolagsverket's register — with its own organization number, share capital, and a share register (aktiebok) that currently lists the formation agent as the sole shareholder.
Buying it doesn't automatically update that. The purchase itself is a share transfer: you're acquiring existing shares from the agent, not issuing new ones. That transfer needs to be entered in the share register — buyer, seller, number of shares, share numbers, price or nominal value, and the date — at the same time as you swap in a new board and, usually, a new company name. For the basics, see our knowledge bank on what a share is.
Why this trips people up
It's an easy step to lose track of, for two reasons. First, it happens fast — most shelf company purchases are marketed on speed, sometimes same-day, so the paperwork around the actual share transfer gets less attention than the more visible steps of renaming the company and registering with Bolagsverket. Second, nothing forces the issue immediately: the company works, invoices can go out, and nobody checks the share register unless something specifically triggers it.
That something usually shows up later, and often at an inconvenient moment. Breakit's own guide flags getting the business bank account right — banks routinely ask for the share register to confirm who owns the company before opening an account, and a register that still shows the formation agent as owner doesn't match what you're telling the bank. The same mismatch resurfaces if you bring in a co-founder, raise money, or sell shares down the line: whoever is checking will expect the register to reflect an unbroken chain of ownership, starting with that first transfer. See how different corporate events should be documented.
Registering a new company isn't automatically simpler
If you go the other route — registering a brand-new company yourself rather than buying a shelf one — you're not exempt either. You're not correcting a shelf company's ownership; you're creating the register from nothing. Sweden's Companies Act requires every limited company to keep a share register from day one, listing shareholders, number of shares, share numbers, and acquisition dates, regardless of how the company was formed or how many owners it has. Our guide to setting up a share register shows how to start.
The minimum to get right, whichever path you choose
Whether you buy a shelf company or register new, capture this at the moment of formation, not later:
- Full names and personal or organization numbers for every shareholder
- Number and type of shares each holds
- Share numbers
- Acquisition date
- For a shelf company specifically: signed documentation of the transfer from the formation agent to you
Keep it updated after that, every time ownership or the board changes.
Frequently asked questions
Does the share register have to be updated when I buy a shelf company?
Yes. The purchase is a share transfer from the formation agent to you and must be entered in the share register with buyer, seller, number of shares, share numbers and date. Registering the new name and board with Bolagsverket does not replace this.
Is the share register filed with Bolagsverket?
No. The share register is kept and maintained by the company itself. Bolagsverket registers the board, signatories, company name and share capital — but not who owns the shares.
Who is responsible for the share register?
Under the Swedish Companies Act, the board of directors is responsible for keeping, updating and preserving the share register.
Why does the bank ask for the share register?
The bank must establish beneficial ownership before opening a business account. A register still showing the formation agent as owner contradicts your application and can delay the account.
Does a one-person company need a share register?
Yes. The requirement applies to every Swedish limited company, regardless of the number of owners.
Keep it right from the start with eAktiebok
The share register is the one piece of paperwork that's easy to postpone precisely because nothing forces you to look at it — until a bank, an investor, or a buyer does. eAktiebok is a digital share register that's simple to set up whichever way you started your company, and keeps ownership, share transfers, and board history in one place instead of a spreadsheet nobody remembers to update. Get started for free or see our pricing.
