Marek Wiśniewski

An accountant who speaks human language

Marek founded the Foundations of Success office in September 2013 in the heart of Opole. You won't hear smart words from economics textbooks from him because he believes that the numbers should speak for themselves. For 11 years, he has been making sure the documents are in order so local entrepreneurs don't have to wake up at night in fear of a letter from the tax office. Specifics instead of promises is his working method, which he has applied since the first invoice issued.

He has worked with 487 different companies in our region, from small auto repair shops to building material wholesalers employing dozens of people. The average time Marek responds to his clients' emails is currently 2 hours and 14 minutes. This is not a coincidence – Marek simply knows that in business, waiting for tax information is wasted time and unnecessary nerves. (Honestly, I hate a mess in papers more than the traffic jams on the Piast Bridge, which is why every binder has its place in my office).

In 2024, Marek helped his clients recover a total of 342,800 PLN from incorrectly calculated tax overpayments. He doesn't believe in magic ways to avoid fees, but he knows the regulations well enough not to leave a single cent more than necessary at the office. His approach is simple: you know your business, he knows the regulations. This division of roles allows Foundations of Success clients to focus on making money, not calculating ZUS contributions.

Before opening his own office, he spent 7 years gaining experience in the financial department of one of the largest logistics companies in the Opole province. There he learned that accounting is not just about typing data into a computer, but about drawing conclusions. Marek can look at an Excel table and in 14 minutes point out where a company is burning money on unnecessary operational costs. The numbers must add up, and with Marek they always do, as confirmed by 43 positive tax audits conducted at his clients' premises in the last 3 years.

At the office on 15 1 Maja St., you'll usually meet him Monday to Friday from 7:30 AM to 3:30 PM. On Thursdays, he usually stays until 6:00 PM to close reports for those who need data at the end of the week. If you're looking for someone to handle your taxes without unnecessary talk and show you how to realistically save time on paperwork, Marek is the right person. He can be stubborn when a client forgets to bring invoices on time, but he only does it because he cares about your wallet.

Ready for order in finances?

Don't waste time on a solo fight with regulations that change every few months. Marek will check your documents and tell you straight what can be improved so you pay lower taxes legally. An end to the mess in papers starts with one short conversation about specifics.

Book a 20-minute consultation or Send an inquiry for a quote