MainStreetRadar tracks sign-up bonuses and fees on US business checking accounts, watches the IRS systems small businesses file and pay through, and explains the dates and rules that cost money when you miss them: estimated taxes, 1099s, sales tax for online sellers.
Who writes it

I am Greg Ciupek, an entrepreneur based in Poland. I run a hosting company (Aderlo) and an e-commerce platform for online shops (GAPLI), and I have written about money since 2015. In Poland I publish Mądry Dochód, a site that checks bank promotions against their terms and ranks business accounts by what they cost in a year, and in the UK TillRadar. MainStreetRadar applies the same method to the United States.
I am not American and I am not a CPA. That is exactly why every figure on this site links to the bank’s own terms or to irs.gov, with the date we checked it. I will not pretend to have tested an account I have not opened. Where a page draws on my own experience as a business owner, it says so.
Who publishes it
MainStreetRadar is published by JG INVEST P.S.A. (a Polish simple joint-stock company), ul. Jana Matejki 2, 32-600 Oświęcim, Poland, KRS 0000915798, NIP (tax ID) 5492463888, REGON 389702924. You can reach me at hello@mainstreetradar.com.
Companies I am involved in
I own or manage companies whose products may appear on MainStreetRadar. When a page mentions one of them, it carries a note saying so at the top, and the product is compared on the same terms as everyone else’s.
- Aderlo — web hosting and domains (ADERLO PSA, Poland).
- GAPLI — an e-commerce and dropshipping platform for online shops.
What MainStreetRadar is not
MainStreetRadar is not a bank, a lender, a tax preparer or a registered investment adviser, and it is not affiliated with or endorsed by the Internal Revenue Service, the U.S. Treasury or any bank. We give general information, not tax, legal or financial advice, and we do not arrange loans, insurance or investments. For your own situation, speak to a CPA, an enrolled agent or a tax attorney.