1Office Review: Established Estonian Formation Service

E-Residency service providers appear regularly, and occasionally disappear just as quickly. 1Office has done neither. Operating since 2010, they predate the e-Residency programme itself and have built their reputation on traditional accounting professionalism rather than software-first automation. The result is a service that looks and feels different from Xolo or Enty: more manual, more relationship-based, and carrying a professional designation held by only 24 companies in all of Estonia. Whether that matters depends on what you actually need from a formation service.

Rating breakdown

What is 1Office?

1Office is a company service provider operating in seven countries — Estonia, Sweden, Finland, Latvia, Lithuania, the UK, and Ireland — with physical offices in several of those markets. They handle company formation, registered address, contact person services, and accounting, and have been operating continuously since 2010, making them one of the longest-running providers in this space.

Their accounting practice holds ERK recognition (Eesti Raamatupidajate Kogu, the Estonian Association of Accountants), a professional certification held by only 24 of over 6,000 accounting firms in Estonia. If you care about the professional standing of whoever handles your books, that credential is meaningful.

Unlike Xolo and Enty, which are primarily software platforms with accounting support layered on top, 1Office is primarily an accounting and professional services firm that has built digital tools to support its operations. That distinction shapes the entire experience.

Pricing breakdown

1Office's pricing model is more traditional than the subscription-first approach of Xolo or Enty, and it separates services that competitors bundle into monthly plans.

Formation fee: €315 (one-time)

This covers the complete formation process: Estonian state fee, a business address in Tallinn, and the legally required contact person. Formation takes roughly 15 minutes online once you have e-Residency. The all-in cost compares favourably with Xolo's €295 formation fee when you consider that 1Office includes the state fee transparently within that single figure.

Company maintenance: €15/month

This covers the registered address and contact person service, the legal minimum to keep an Estonian company in good standing. At €180/year, it is among the lowest maintenance costs available.

MyAccounting service: €35/month

1Office prices accounting separately from maintenance. At €35/month (€420/year), the service covers bookkeeping, VAT reporting, and annual report preparation for a standard company.

Combined annual cost: typically €2,000–€4,000

When you add formation, ongoing maintenance, accounting, and any additional services (payroll, VAT registration, legal support), the real-world annual cost for a fully maintained company sits in the €2,000–€4,000 range. Broadly comparable to Xolo's Pro tier over a full year, though the service structure is different.

Note on e-Residency: Like every provider in this comparison, 1Office assumes you either have e-Residency or are applying for it. The e-Residency state fee (€150) is paid directly to the Estonian government and is not included in any provider's formation pricing.

Key features

ERK-recognised accounting: The ERK certification is the most distinctive part of 1Office's offering. It means their accounting practice meets the professional standards set by the Estonian accountancy profession's governing body — the same body that certifies public-interest accounting firms. If you have ever been burned by sloppy bookkeeping or missed filing deadlines, that credential provides a level of assurance no amount of marketing copy can replicate.

Physical office in Tallinn: 1Office maintains a real office in Tallinn, which means in-person meetings are possible. Unusual among e-Residency service providers, most of whom operate entirely remotely. If you periodically visit Estonia, or simply want the option to sit across from your accountant, that matters.

Company formation in roughly 15 minutes: The formation process is handled online and takes around 15 minutes once you have e-Residency. Standard for Estonian formation through any competent provider, not a differentiator.

Business address in Tallinn: The registered address is in Tallinn and is included in the formation fee. Ongoing address service is covered by the €15/month maintenance plan.

Contact person service: Legally required for Estonian companies, provided as standard. 1Office is listed on the Estonian Business Register as an authorised contact person provider.

Online invoicing via My1Office: The My1Office platform includes online invoicing, allowing you to create and send invoices directly. Not as feature-rich as Xolo's or Enty's invoicing tools, but functional for standard use.

Full accounting coverage: MyAccounting handles bookkeeping, tax filing, EU VAT handling, payroll (if applicable), and annual statutory reporting. The work is done by qualified human accountants, not automated software pipelines.

Trustindex rating: 4.4 stars across 104+ customer reviews. A reasonable signal of satisfaction, though the sample is smaller than Xolo's review volume.

Pros

• Longest track record in this comparison. Operating since 2010 — before e-Residency existed. When a provider is handling your legal compliance over years, continuity matters.
• ERK-recognised accounting. Professional certification held by 24 Estonian firms out of 6,000+. A genuine differentiator if accounting quality ranks high on your list.
• Physical presence in Tallinn. In-person meetings are possible. No software-first provider offers that.
• Transparent, modular pricing. Formation, maintenance, and accounting are separated, so you can see exactly what you are paying for and match services to actual needs.
• Human accountants, not automation. For complex or unusual transactions, a qualified accountant who will actually pick up the phone is worth considerably more than a well-designed software pipeline.
• Solid customer reviews. A 4.4-star Trustindex rating across 104+ reviews — a credible, sustained record.

Cons

• More manual than competitors. 1Office is not a modern SaaS platform. The experience is traditional: document exchange, accountant communication, manual processes. If you are accustomed to Xolo's or Enty's polished dashboards, expect a different feel.
• Mixed Trustpilot reviews. Trustindex reviews are positive, but Trustpilot is more mixed. Praise tends to focus on accounting quality and professionalism; criticism centres on communication delays and slower response times.
• Higher all-in cost for full accounting. When maintenance and accounting are combined, the annual cost approaches the higher Xolo tiers. The cost advantage is smaller than the headline formation fee suggests.
• Less polished software platform. The My1Office platform includes online invoicing and basic management tools, but it is not as feature-rich or polished as Xolo's or Enty's dashboards.
• Less suited to high transaction volume. The manual accounting model works well for consultants with a manageable number of monthly transactions. High-volume businesses will find it less efficient.

Who is 1Office best for?

1Office is a strong fit for founders who fall into one or more of these profiles:

• You prioritise accounting quality and professional credentials over software features.
• You value a human relationship with your accountant rather than an automated platform.
• You occasionally visit Tallinn and want the option of in-person meetings.
• Your company has complex or unusual transactions where a qualified accountant adds more value than automation.
• You want the reassurance of a long-standing, professionally certified firm handling your compliance.

It is less well-suited if you want a modern self-service platform, if you are optimising for the lowest possible monthly cost, or if your business involves high invoicing volumes that benefit from automation.

Looking ahead: 1Office and EU Inc

1Office has been operating since before e-Residency existed and has adapted to shifts in the Estonian business service market multiple times. The EU Inc proposal, a standardised company form across all 27 member states, represents a different kind of challenge: extending services to a new legal structure, or positioning existing Estonian OÜ services as a complement to EU Inc rather than a substitute. With operations already spanning seven countries (Estonia, Sweden, Finland, Latvia, Lithuania, the UK, and Ireland), 1Office is better positioned than most providers to adapt to EU Inc. If you form a company with them today, you are working with a provider that has genuine staying power and multi-country experience.

Verdict

Formation fee: €315 (one-time, includes state fee, address, contact person) Maintenance: €15/month Accounting: €35/month (MyAccounting) Annual all-in cost: Typically €2,000–€4,000 Best for: Founders who prioritise professional accounting quality, human relationships, and long-term provider stability

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