Today TaxMama hears from Joe in the TaxQuips Forum with this question. “How do you calculate the penalty and interest when amending a tax return? I was told by a local chain that does taxes, that only the IRS can calculate these.buy doxycycline uk https://blackmenheal.org/wp-content/languages/new/uk/doxycycline.html no prescription https://mannadew.co.uk/wp-content/languages/new/finasteride.html ” https://taxmama.wpengine.com/forum/taxquips/penalties-and-interest/