Accounting Workflows for an OÜ: What to Agree on From Day One

An Estonian private limited company (OÜ) can run with very little formal administration, which is exactly why accounting often becomes messy quietly. Nobody decides to create chaos. It happens because small, reasonable choices made in the first months — who sends invoices, where receipts live, when the accountant is told about a purchase — are never written down. Six months later, the bookkeeper is reconstructing a quarter from chat messages and screenshots.

The fix is not a complicated system. It is a set of simple, explicit workflows agreed early and revisited as the company grows. This guide covers the workflows worth defining, whether you are a solo freelancer with an OÜ, a foreign founder running a company remotely, or a team of five that has outgrown informal habits.

1. Define who does what, and who decides

Before tools or templates, agree on responsibilities. A common failure mode is the "everyone assumes someone else did it" gap: the founder thinks the accountant has the invoice, the accountant thinks the founder will upload it, and the supplier thinks they have been paid.

Write down a short responsibility map covering at least these areas:

• Sales invoicing: who creates invoices, who approves unusual terms, who follows up on overdue payments.
• Purchases and receipts: who collects receipts, how quickly, and in what form.
• Bank and payments: who initiates payments, who approves them, and what evidence accompanies each payment.
• Payroll and board member remuneration: who supplies the inputs, and by when.
• Reporting and filings: who prepares them, who reviews them, and who signs.
• Questions and changes: a single named contact for the accountant, so instructions do not arrive from three directions.

For a one-person company, this map may be a paragraph. For a growing team, it becomes a small table. Either way, the value is in making assumptions visible. If two people both believe they own receipt collection, in practice neither does.

A useful test: for each workflow, ask "if this person is on holiday for two weeks, what breaks?" The answer tells you where a backup or a written procedure is needed.

2. Agree on the document trail before the first transaction

Accounting quality is largely a documentation habit. Estonian bookkeeping expects transactions to be supported by appropriate documentation, and reconstructing that after the fact is slow and error-prone. Agree early on what counts as acceptable evidence and how it travels from the person who spent the money to the person who records it.

Practical rules that work at almost any size:

• One intake channel. Receipts go to a single place — a shared folder, an accounting inbox, or a photo upload — not scattered across personal email and messaging apps. Multiple channels guarantee duplicates and gaps.
• Same-day capture. Photograph or forward receipts when the expense happens. A receipt found three months later is a small forensic project.
• Name files predictably. A convention such as date, supplier and amount makes searching possible without opening every file.
• Keep the original. A photo of a receipt is useful, but the underlying document should be retained according to your record-keeping obligations.
• Flag the unusual. If a purchase is personal, partly business, or paid by someone other than the company, say so at capture time rather than letting the accountant guess.

A concrete example: a team member buys a train ticket for a client meeting with a personal card and is reimbursed later. Without a rule, the accountant sees a bank transfer to an individual with no obvious purpose. With a rule — "expense claims submitted with receipt and business purpose within the same week" — the reimbursement is easy to record and defend.

3. Set a monthly rhythm instead of an annual scramble

Many small companies treat accounting as an annual event. It works until it does not: the year-end becomes a archaeology exercise, and mistakes are discovered when they are expensive to correct. A light monthly rhythm prevents most of this.

A workable cadence for a small OÜ looks like this:

1. Weekly (minutes): capture receipts and issue invoices as work is completed.
2. Monthly (under an hour for most small companies): send all documents to the accountant, review the bank statement for anything unexplained, and confirm that sales invoices match what was actually delivered.
3. Quarterly (a short review): check that the accountant's figures match your own understanding, look at what is owed and owed to you, and note any upcoming obligations.
4. Annually: review the year as a whole and adjust workflows for the next one.

The monthly step is the one that pays for itself. It is far easier to answer "what was this payment for?" four weeks after it happened than eleven months later. It also gives you an early warning if revenue, costs or cash are moving in an unexpected direction.

For remote founders and e-residents, the rhythm needs an explicit time zone and channel. Agree which day documents are sent, in which format, and what happens if the founder is travelling. "Whenever I remember" is not a workflow.

4. Decide how money actually moves

Cash flow problems in small companies are often workflow problems. Money arrives late because invoices go out late; invoices go out late because nobody agreed who sends them or when. Payments are duplicated or missed because approval is informal.

Agree on a few simple rules:

• Invoice timing: when is an invoice issued relative to delivery — on completion, at the start of a project, or on a schedule? Whatever you choose, apply it consistently so revenue recognition and follow-up are predictable.
• Payment terms and follow-up: who monitors receivables, and at what point a polite reminder becomes a process. Late payment is normal in business; having no follow-up is a choice.
• Payment approval: for larger amounts or new payees, require a second pair of eyes. This is as much about fraud prevention as about accuracy.
• Separation of business and personal money: the company account is for company transactions. Mixing personal spending into it creates bookkeeping work and, in some cases, tax consequences.
• Currency and foreign payments: if you invoice or pay abroad, agree how exchange differences and fees are documented, so the accountant is not guessing.

A simple example: a freelancer invoices a client in another currency. The invoice amount, the amount actually received, and the bank fee all differ. If the freelancer notes the invoice reference on the payment and tells the accountant, the reconciliation takes seconds. If not, it becomes a matching puzzle.

5. Plan for growth and for handovers

Workflows that suit a solo founder often break at the first hire, the first VAT registration, or the first time someone else touches the books. Build in a little room from the start.

Things worth agreeing before you need them:

• Access and permissions: who can view the bank account, who can create invoices, who can approve payments. Grant the minimum needed, and review access when roles change.
• A single source of truth: decide where the definitive record of invoices, documents and reports lives, so there is one answer to "where is it?" rather than several.
• Onboarding notes: a one-page description of your accounting workflow is enough for a new team member, a new accountant, or a temporary replacement.
• Review points: agree to revisit the workflow when the company hires, changes accountant, expands abroad, or changes its invoicing model.

This is where a shared workspace helps. Some companies use dedicated accounting software to keep invoices, documents and reports in one place; arvekram.com is one example of software built for freelancers, companies and e-residents. The tool matters far less than the agreement behind it: one place, one process, one owner.

A short checklist to start with

If you are setting up or tidying an OÜ's accounting, agree these points in writing and share them with everyone involved:

• A named owner and a backup for each accounting task.
• One intake channel for receipts and documents, with a same-day capture habit.
• A monthly date for sending documents to the accountant.
• Clear rules for invoicing, payment approval and receivables follow-up.
• Separation of company and personal money, with a note on how foreign currency and fees are documented.
• Access permissions reviewed when people join, leave or change roles.
• A one-page written summary that a new person could follow.

None of this requires sophisticated systems. It requires decisions made early, written down, and reviewed as the company changes. The companies that find accounting calm are rarely the ones with the most software; they are the ones where everyone knows what happens next.

This article is general information, not individual tax or legal advice. Accounting and tax rules depend on your specific circumstances and can change, so confirm details with a qualified professional or the relevant authority before acting.