Bookkeeping services for sole traders
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Sole trader bookkeeping
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Sole trader invoicing services
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Sole trader annual tax return
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Why choose Corosar as your financial management partner?
#1
Clear pricing — no surprises or hidden fees
#2
Expert support and proactive service
#3
Modern tools and fully digital processes
#4
Extensive experience in bookkeeping and taxation for sole traders
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Yes, you can transfer your sole trader bookkeeping to us at any time during the year — there is no need to wait for the end of the financial year. If you are not satisfied with your current situation or solutions, we will handle the transfer for you quickly and smoothly.
We make sure that all the necessary information and documents are transferred correctly and without interruptions, so your company’s financial administration continues seamlessly.
When you outsource your sole trader financial administration to us, you avoid common mistakes, unnecessary tax consequences, and extra stress. We ensure that your bookkeeping, invoicing, financial statements, and tax returns are handled correctly and on time, reducing the risk of late fees and penalties.
Yes. If your sole trader income for 12 months exceeds €9,423.09 during 2026, you must take out YEL insurance. Corosar helps you determine the correct YEL income level so you don’t pay too much or too little.
We also make sure you benefit from any available deductions and tax advantages, helping you optimize your taxation and save money. If needed, we can also handle all communication with the Finnish Tax Administration and the pension insurance company on your behalf, so you can focus on growing your business without administrative stress.
Yes, we do! You can always call us or book a personal meeting at our office or a video call. We will go through your situation together, including your sole trader bookkeeping and taxation, invoicing, or financial statement needs, and help you find the best solutions for your business.
It’s important to us that you receive clear answers and understand what happens next, without getting lost in complicated financial jargon.
We have a clear reminder system that ensures no important deadline catches you by surprise. We monitor the schedules for tax returns, financial statements, and other official reports on your behalf and notify you well in advance of any required actions. This helps you avoid late fees and additional requests for clarification.
Sole trader financial administration covers all statutory bookkeeping obligations. It includes bookkeeping, invoicing, tax-related reports and filings, as well as any necessary additional monitoring. In addition, it is recommended that a sole trader has a separate bank account through which all business transactions are handled.
Well-managed financial administration makes it easier to monitor the company’s financial situation, calculate taxes, and make informed decisions. With us, you get sole trader bookkeeping, invoicing, tax services, and financial statements conveniently from one place.
FAQ – Bookkeeping Services
Sole trader bookkeeping, invoicing and financial statements under one roof
With us, you get everything you need for your company’s financial management in one place. Whether it’s sole trader bookkeeping, invoicing, or financial statements / the annual tax return, we handle everything clearly, on time, and correctly.
You don’t have to worry about tax reporting, financial reporting, or YEL arrangements — we take care of them for you. We are always close at hand and help with all bookkeeping-related matters in plain language, so you can understand your company’s financial situation without unnecessary complexity or jargon.