The criminal complaint is available online.
It doesn't look like he ever earned more than about $72,000 a year as a cop.
However, when they searched his home following the Floyd incident, they discovered some records showing payments he received working security for nightclubs during the weekends. Some of the records are detailed, and in other instances the revenue department "extrapolated" the records to try to guess what his income was. Over the course of 2014 to 2019 they figure he was paid about $95,000 from one night club alone.
His real estate work in Minnesota netted him less than $10,000.
However, she also sold real estate and earned between $22,000 and $94,000 each year during the relevant time frame. They also found checks written to her photography business during those years that totaled $66,000.
You start adding it all up, and if you don't file returns at all, they'll nail you for $465,000 in unreported income over the course of six tax years.
https://minnesotareformer.com/2020/07/22/derek-chauvin-charged-with-tax-fraud-in-washington-county/