i do not owe any past taxes, child support or any other fees to the feds or state, why would my tax return be over 3k lower. will i get an explanation from them...

i am single and lived in the home the entire time i owned it.i bought the home for 310k and sold for 730k, is it considered no gain because of the 250k and the ...

i bought my home in 2013 for 310k sold it in 2021 for 730k. i have over 140k in upgrades and the broker/agent fees were around 40k so i should not have capitol ...