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Accounting for sole traders
Accounting at a fixed price

Corosar Accounting – accounting for sole traders

Corosar makes accounting for sole traders simple and predictable. You don’t need to worry about taxes or reports — we take care of the numbers so you can focus on growing your business.

Free consultation

Or call +358 50 590 7166

Or call +358 50 590 7166

59€ / mo

VAT 0% | Price from

0€

Accounting transfer

200+

Clients

59€ / mo

VAT 0% | Price from

200+

Clients

6 weeks

Complete onboarding

0€

Accounting transfer

Fixed-price accounting for sole traders — no surprises

Accounting Firm Corosar makes sole trader accounting and tax filings clear and predictable. Your dedicated accountant gets to know your business, ensuring reports, YEL arrangements and deadlines are handled correctly and on time. This allows you to focus on what matters most — your customers and growth.

Fixed price – no surprises

59€ / mo

Price from | VAT 0%

Fixed price – no surprises

From 59€ / mo

(VAT 0%)

View pricing
Accounting and financial services

See what our clients say about us

We already serve over 200 sole traders across a wide range of industries, including IT and creative fields, wellbeing and beauty services, construction and renovation, consulting, e-commerce, and much more. No matter your industry, you’ll receive the same knowledgeable service.

200+

happy sole traders

The service has always worked smoothly, response times have been fast, and I’ve never been left on my own with any issues.

With Corosar, I can simply send in my receipts and don’t have to worry about the rest. There have been no surprises.

Clear pricing and reliable service. I know exactly what I’m getting, and as a small business owner, simplicity with my accounting firm really matters to me.

From the very beginning, things have always been clearly explained — why something is done and how. Most importantly, I’ve been kept up to date and fully aware of my company’s financial situation, which is especially important as an entrepreneur.

It’s easy when I can simply send in my receipts and everything is taken care of.

Being able to trust that things are done right and professionally is a big plus for me with Corosar.

Why choose us?

Because we make everyday business easier

01

We take care of your tax returns and YEL arrangements for you.

02

A clear start — complete onboarding in just 6 weeks.

03

You can call us, send a message, or stop by our office.

04

Practical tools and templates for mileage allowances, per diems, and other expense reimbursements.

05

One clear monthly price — no hidden fees, no surprises.

06

You get guidance and support, so you always know what’s happening and why.

Accounting for sole traders

Sole trader accounting

Read more

Toiminimen laskutus

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Annual tax return for sole traders

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Ilja Mikkonen, Accountant

Hi, I’m Ilja,
founder of Corosar

I founded Corosar because I wanted to create an accounting firm that does things differently — smarter, clearer, more genuinely and more proactively. It’s important to me that no entrepreneur is left alone with paperwork and tax matters. We want to be a partner who takes care of your finances, so you can sleep peacefully and focus on what truly moves your business forward.

Share your concerns

Moving to us is easy

Start your accounting firm switch today

Free accounting transfer

We handle the full transfer from your current accounting firm — no need to worry about a thing.

We’ll take over smoothly

If you’re in the middle of a financial year, we’ll take over smoothly. This way, you can start with Corosar with a clean slate — without any extra hassle.

A new chapter for your accounting

You’ll have a dedicated accountant who gets to know your business and helps you get started from day one. The transfer is completely free.

Our partners

Finnish Taxpayers’ Association logo
Helsinki Entrepreneurs logo
Partner of the Finnish Association of Accounting Firms
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