iStockphotoThe Canada Revenue Agency (CRA) assessed $166.2 million in tax-free savings account (TFSA) excess taxes in 2024, up from $130.8 million in 2023, the agency said in an email to Investment Executive. That compares with 117,000 overcontributors in 2023, with an average excess tax of $1,118.39. The number of TFSA holders who overcontributed has far outpaced overall account growth. Likewise, the total TFSA excess tax assessed ballooned more than tenfold, to $166.2 million in 2024 from $15.2 million in 2015. The average tax assessed rose to $1,252.22 last year from $457.75 in 2015 .