Online Accounting for Estonian OÜs
How fully digital, cloud-based accounting works for Estonian companies — Merit Aktiva setup, EMTA e-Tax integration, bank feeds, e-invoices, digital document storage, and how to manage everything without paper or office visits.
What Makes Estonian Accounting Ideally Suited to Being Fully Online
The Estonian Tax and Customs Board (EMTA) has operated a fully digital e-Tax portal since 2001. All TSD declarations, KMD returns, information requests, and correspondence are handled electronically. There is no requirement to visit an EMTA office for any routine tax matter.
Estonia’s digital identity infrastructure — the e-ID card, Mobile ID, and Smart-ID — allow legally binding electronic signatures on any document. Annual reports, board resolutions, service agreements, employment contracts, and EMTA submissions are all signable digitally without printing.
LHV Pank’s LHV Connect API, SEB’s banking API, and Coop Pank’s data export enable automatic daily transaction feeds into accounting software. For most OÜs, bank statement reconciliation is fully automated — no manual data entry.
Company registration, annual report filing, shareholder changes, and board member updates all happen through the e-Äriregister portal. A notarised physical visit is only required for specific corporate actions involving notarially verified transactions.
The Estonian e-invoice (e-arve) standard allows businesses to send structured XML invoices directly to accounting systems via the Finbite or Telema network. For government suppliers, e-invoicing is mandatory. For B2B, it eliminates manual invoice capture and reduces errors.
The Raamatupidamise seadus (Accounting Act) allows accounting records to be kept in electronic form throughout the 7-year retention period. No physical archive of paper invoices or receipts is required — cloud storage of PDF and digital originals is legally sufficient.
What does ‘online accounting’ mean for an Estonian OÜ? It means your entire accounting workflow — from capturing invoices to filing EMTA declarations to signing the annual report — happens digitally, without printing, posting, or office visits. Your accountant works in Merit Aktiva connected to EMTA via API. You interact through email, a shared document folder, and your bank’s internet portal. The end result is the same as traditional accounting, but faster, cheaper, and accessible from anywhere in the world.
Section 1 — The Digital Tool Stack
Every task in the accounting workflow — which tool handles it and what you need to do
Your Role vs Your Accountant’s Role in the Online Workflow
| Task | Tool Used | Where It Lives | What You Need to Do |
|---|---|---|---|
| Monthly bookkeeping | Merit Aktiva | Cloud — accessible from browser anywhere | Nothing — your accountant posts transactions; you can view in real time |
| Bank transaction import | LHV Connect API / SEB / Coop bank feed | Automatic — daily feed from Estonian bank | Connect bank feed once during setup; runs automatically thereafter |
| Sales invoice creation | Merit Aktiva invoice module | Cloud — create from browser or mobile | Create invoice in Merit Aktiva or send PDF; your accountant captures it |
| Purchase invoice capture | Email forward / Google Drive upload | Email or shared cloud folder | Forward supplier email invoices to accounting email address |
| EMTA KMD filing (VAT return) | Merit Aktiva → EMTA e-Tax API | EMTA e-Tax portal — filed electronically | Nothing — your accountant files via esindusõigus delegation by 20th |
| EMTA TSD filing (payroll) | Merit Aktiva payroll → EMTA e-Tax API | EMTA e-Tax portal — filed electronically | Confirm payroll changes by 3rd of month; your accountant files by 10th |
Section 2 — Merit Aktiva: Estonia’s Standard Accounting Platform
Why Merit Aktiva is the right choice and how it is configured for your OÜ
What Merit Aktiva Provides
| Merit Aktiva Feature | What It Does | Estonian Compliance Benefit |
|---|---|---|
| EMTA e-Tax API | Directly submits TSD and KMD declarations from Merit Aktiva to EMTA without re-entering data | Eliminates manual data transfer; reduces filing errors; provides submission confirmation directly in software |
| Estonian payroll module | Calculates TSD-compliant payroll: social tax (33%), income tax (20%), employer and employee UI, II pillar pension | Pre-configured Estonian tax rates; no manual rate updates when EMTA changes basic exemption (€654/month for 2024) |
| E-invoice (e-arve) module | Sends and receives Estonian standard e-invoices via Finbite and Telema networks | Required for Estonian government suppliers; eliminates manual invoice capture from B2B partners using e-invoicing |
International accounting platforms (Xero, QuickBooks, Sage) lack native EMTA integration, Estonian payroll calculation, e-invoice support, and Business Register annual report export. Merit Aktiva eliminates these steps and provides a single system for all Estonian compliance tasks.
Section 3 — EMTA’s Digital Services
Every digital service EMTA provides and how your accountant uses them
The EMTA e-Tax Portal — What Is Available
| EMTA Digital Service | What It Does | Access Method | When Used |
|---|---|---|---|
| e-Tax portal (e-MTA) | Central filing hub for TSD, KMD, income declarations, information requests | Log in with e-ID, Mobile ID, or Smart-ID; or via esindusõigus delegation by accountant | Every month for TSD and KMD; when EMTA contact is needed |
| TSD declaration filing | Submit monthly payroll tax declaration — social tax, income tax, UI, II pillar | EMTA e-Tax portal → Declarations → TSD | By 10th of each month following payroll period |
| KMD declaration filing | Submit monthly VAT return — output VAT, input VAT, net position | EMTA e-Tax portal → Declarations → KMD | By 20th of each month (if VAT-registered) |
Section 4 — Bank Feeds and E-invoices
Automating the data-heavy parts of accounting
LHV Connect API — The Gold Standard Bank Feed
| Bank | Feed Method | Setup Required | Update Frequency | Best For |
|---|---|---|---|---|
| LHV Pank | LHV Connect API (native Merit Aktiva integration) | One-time API connection in LHV portal + Merit Aktiva | Daily automatic | Primary recommendation for most Estonian OÜs |
| Coop Pank | CSV export / API (Merit Aktiva integration available) | One-time connection; some manual config | Daily or on-demand | Good alternative; lower fees |
E-invoicing (E-arve) — How It Works
E-mail invoices from suppliers: Forward the email as-is (10 seconds) | PDF invoices: Photograph or scan (30 seconds) | Cash register receipts: Photograph immediately (30 seconds) | Bank statement: Automatic via bank feed (0–2 minutes)