For 2023 taxes, 1099 was sent out Feb 2024. Taxes filed March 2024. Oct 2024, 1099 corrected sent out. 
Accountant said  cost basis of 1 of the stock was $30 less that results in owing fed $4 and $2 state. Do I need to file an amended 2023 return? Accountant will charge $175 to file this amendment.