Estonian OÜ businesses · e-residents · startups

The accountant you wish you always had.

AI helps you find invoices so you don't waste your time. A human accountant files your tax returns and annual reports.

€49+ VAT per month. Covers most companies.
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Write before 15:00 on a working day and we usually answer the same day.

  • Bank reconciliation
  • Receipts and invoices
  • VAT return
  • Payroll and dividends
  • Annual report
  • OSS and IOSS
  • A human accountant
  • AI assistant, 24/7
  • Automatic bookkeeping

What a normal month looks like.

Invoice inbox

Your Oscar address

sauna-robotics-k7m2q9@inbox.oscaraccountant.com

  • Telia Eesti AS · Invoice 88213€40.66
  • AWS · Invoice 2291€412.00
  • Zoomly Rides · 4 receipts€63.20
  • Hetzner · Invoice€89.25

23 booked and matched to the bank this month.

Never chase receipts again.
  • Gmail Email forwarding. Set up a Gmail filter once. Invoices go to your Oscar address.
  • ClaudeChatGPT Claude or ChatGPT (MCP). Your AI agent finds the missing invoices and sends them.
  • DropboxGoogle DriveDropbox and Google Drive. Soon

Returns

  • VAT returnFor VAT-registered companies
    Every month, by the 20th
  • Payroll and dividends
    Every month, by the 10th
  • OSS returnFor EU sales to consumers
    Every 3 months
  • IOSS returnFor imports sold to EU consumers
    Every month
  • Annual reportIf your fiscal year is the calendar year
    Every year, by 30 June
Every return, on time.

Oscar prepares each return. Our accountant verifies and files it.

Ask AI

Which invoices are still unpaid?

Oscar AI

Three invoices are unpaid, €4,320.00 in total. One is 12 days late.

Rocket Llama OÜ · late€2,100.00
Moonlit Bakery OÜ€1,470.00
Bold Koala Media OÜ€750.00
Ask, and get the answer now.

Get instant answers from AI. Ask our human accountant the serious questions.

Built for all kinds of companies.

From a one-person OÜ to a holding company. Annual reports to the e-Business Register, returns to the Tax and Customs Board.

  • Consultants and freelancers

    A one-person OÜ. Salary or dividends, and the taxes on each.

    • Sales invoices
    • Dividends
    • Payroll

  • Software and SaaS

    Customers in many countries, paid by card.

    • Stripe
    • Reverse charge
    • OSS

  • Online shops

    Sales to consumers across the EU and the UK.

    • OSS and IOSS
    • UK VAT
    • Shopify Soon

  • Holding and investment companies

    Shares, funds, loans and subsidiaries.

    • Stocks
    • Dividends received
    • Lightyear

  • Real estate

    Purchases, rentals and renovations.

    • Rental income
    • Depreciation

  • Companies with assets

    Vehicles and equipment, written off over the years.

    • Fixed assets
    • Depreciation

Your books, handled by Oscar AI and our human accountant.

Write before 15:00 on a working day and we usually answer the same day.

Get started
Chat with us

Reports you can read.

See your revenue, costs, profit and bank balance on one page. Open the profit and loss report for any month. No accounting words you have to look up.

Not sure what a number means? Ask Oscar AI. Or ask our accountant.

Dashboard · Sauna Robotics OÜ

Revenue, 2026€84,210
Costs, 2026€51,960
Profit, 2026€32,250
Bank balance€27,480

Revenue by month · Jan to Oct

Profit and loss · October

Sales€9,840.00
Costs of goods and services-€3,215.40
Salaries and taxes-€2,980.00
Profit€3,644.60

Accounting, like it's 2026.

Connect Oscar to your AI, your bank and your inbox. Your books keep themselves up to date.

Accounting for the agentic era 
ClaudeClaude · Oscar connectorConnected

Find my missing receipts for October in Gmail and send them to Oscar.

oscar.list_missing_documents()gmail.search("Zoomly Rides receipt October")oscar.upload_document × 4 ✓

4 receipts were missing. I found them in your Gmail and sent them to Oscar. October now has no missing receipts.

ClaudeAdd to ClaudeChatGPTAdd to ChatGPT

Your AI

  • ClaudeChatGPT

    Claude and ChatGPT

    Add Oscar as a connector (MCP). Ask about your books, send receipts.

  • API and CLI

    Your books in your own scripts and tools.

Your money

  • LHVSEBSwedbankWiseRevolut

    Banks

    LHV, SEB, Swedbank, Wise, Revolut
  • Stripe

    Stripe

    Every charge and fee booked
  • PayPal

    PayPal Soon

    Sales and fees booked
  • Shopify

    Shopify Soon

    Orders and payouts booked

Your documents

  • Gmail

    Email forwarding

    Invoices to your own Oscar address
  • Google DriveDropbox

    Drive and Dropbox Soon

    Receipt folders

Questions and answers.

Who is responsible if there is a mistake?

We are. If our accountant or our software makes a return late or wrong, we pay the tax interest and penalties, up to 12 months of your fees.

How do I switch from my current accountant?

Sign up and tell us who does your accounting now. We can migrate the books from any software, including Xolo, Merit Aktiva, Standard Books, Directo.

What if my setup is not standard?

It is probably less unusual than you think. If you need a special integration, we are usually happy to build it. Write to us and we confirm before you start.

Can I take my books with me?

Yes. You own your books. Export everything at any time.

Which languages do you speak?

English and Estonian.

How fast do you answer?

Oscar AI answers at once. Write before 15:00 on a working day and we usually answer the same day.

Pricing

One price. You only pay more if you're really big.

€49+ VAT / month

Or €490 + VAT a year: 2 months free.

Flat fee. Covers most Estonian companies. No setup fee. Cancel any time: the plan ends with the month or year you paid for.

Get started
  • Unlimited sales invoices
  • Unlimited revenue
  • Up to 100 purchase invoices / month
  • Up to 3 employees
  • Stripe
  • PayPal, Shopify Soon
  • Stocks (Lightyear, etc.)
  • Fixed assets (vehicles, real estate, etc.)
  • ChatGPT & Claude access via MCP
  • API and CLI
  • OSS and IOSS returns
  • Ask our AI assistant
  • Usually a same-day reply: write before 15:00 on a working day
  • 4 bank accounts includedLHV, Swedbank, SEB, Revolut Business, Wise and more

Bigger than this? Over 100 purchase invoices a month: €0.05 per additional invoice. More than 3 employees: €5 / month per additional employee. More than 4 bank accounts: €5 / month per additional account. Prices exclude VAT.

Selling to consumers in the UK? UK VAT returns: €19 + VAT / month per registration. Oscar books your UK sales and works out each return, and an accountant checks the figures against your books. You file the return and pay HMRC. How UK VAT works

Questions? Write to [email protected].