

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.
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

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.
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.
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