01
Bookkeeping & Financial Reporting
Continuous double-entry bookkeeping and statutory financial statements prepared under the Finnish Accounting Act.
Read the detail →Accounting & tax consultancy · Hyvinkää
Books that stand up to scrutiny, closed on the day they are due.
We keep the ledgers, file the returns and run the payroll for companies operating in Finland — and we document the reasoning, so your position holds when a bank, a buyer or the Tax Administration asks how you got there.
53 years on the Finnish Trade Register — the company was entered on 5 October 1973 and has traded under the name Abacus Accounting Oy since 8 April 2014.
Registered particulars
Checked 23 August 2026- Legal name
- Abacus Accounting Oy
- Company form
- Osakeyhtiö (Oy)
- Business ID
- 0115454-6
- EU VAT number
- FI01154546
- Trade Register entry
- 1973-10-05
- Line of business
- 69201
- Registered office
- Harjukatu 30, 05900 Hyvinkää
Every figure above is public. Check it in the register →
What we do
Five things, done properly
Our registered line of business is 69201 — accounting and bookkeeping activities; tax consultancy. Everything below sits inside it.
02
Corporate Tax Advisory & Compliance
Finnish corporate tax, VAT and reporting obligations — filed on time, documented so they hold up on review.
Read the detail →03
Payroll Administration & HR Support
Payroll runs, Incomes Register reporting and the employer paperwork that follows each one.
Read the detail →04
Business Management & Strategic Advisory
Budgeting, cash-flow planning and the financial groundwork behind a decision you have to make.
Read the detail →05
Audit Preparation Support
Getting the records ready for the auditor your company appoints.
Read the detail →How an engagement starts
No surprises in the first close
Most of the work in a handover happens before the first month we actually book. We would rather find the gap in your opening balances in week one than in the year-end audit file.
Fees are agreed in writing before any work starts, based on transaction volume, payroll headcount and the reporting you need — never on a share of any tax outcome.
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Scoping conversation
We look at your current bookkeeping, filing history and reporting needs, and tell you plainly what we would take on and what we would not.
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Written engagement terms
Scope, responsibilities, deadlines, fee basis and data-protection terms, signed by both sides before we touch a ledger.
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Handover and opening balances
We take the records from your previous provider, reconcile the opening balances and flag anything that needs correcting.
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Monthly rhythm
Bookkeeping, VAT and payroll on a fixed calendar, with a named contact who knows your file and answers within one business day.
Statutory reference
The dates and rates we work to
Published so you can check them yourself rather than take our word for it. Reviewed on 23 August 2026; the source is linked beside each figure. Rates and thresholds change — confirm the current position before relying on it.
| Item | Figure | Note | Source |
|---|---|---|---|
| General VAT rate | 25.5 % | Applies to most goods and services sold in Finland. | Verohallinto — VAT rates |
| Reduced VAT rate | 13.5 % | Lowered from 14 % with effect from 1 January 2026. | Verohallinto — VAT rates |
| Small-business VAT threshold | 20 000 € / calendar year | Below this turnover a business may stay outside the VAT register. | Verohallinto — VAT relief for small businesses |
| VAT return and payment due | 12th of the month | For monthly filers, the 12th of the second month following the period. | Verohallinto — self-assessed taxes |
| Corporate income tax | 20 % | Flat rate on the taxable income of a Finnish limited company. | Verohallinto — corporate income tax |
| Incomes Register earnings report | 5 calendar days | Each wage payment must be reported within five calendar days of the payment date. | Tulorekisteri — reporting deadlines |
Audit thresholds. Under Tilintarkastuslaki 1141/2015 (2:2) an auditor must be appointed where at least two of the following are exceeded in both the closed and the preceding accounting period: balance-sheet total 100 000 €, turnover 200 000 €, employees 3 (average during the period). We can tell you whether you are approaching the thresholds; the audit itself is performed by the auditor your shareholders appoint.
What we are
An independent accounting and tax consultancy firm, registered in Finland, entered in the Prepayment Register and the VAT Register, working for companies that operate here.
- Fixed, written fees agreed before work starts
- A named contact who knows your file
- Advice recorded with the provision it rests on
- Your records handed over cleanly if you ever leave
What we are not
Stated plainly, because it is the fastest way to find out whether we are the right firm for you.
- Not the Finnish Tax Administration, and not acting on its behalf
- Not a firm of authorised auditors — we do not perform statutory audits
- Not a credit institution, payment institution, investment firm or insurance intermediary: we neither lend, arrange finance, nor advise on investments
- Not in the business of promising a tax outcome. We apply the law as it stands and document how
Tell us what your accounting period looks like.
Send us the shape of your business — turnover band, headcount, how the bookkeeping is handled today — and we will come back with a written proposal and a fixed fee.