When are tax returns after a death complicated enough to need specialized tax advice?

Specialized help is more valuable when the estate has both a final individual return and a fiduciary income tax filing, unresolved prior year returns, state obligations, estimated payments, or information returns. Income through the date of death generally belongs on the final Form 1040, while later estate income may belong on Form 1041 if filing requirements are met. A CPA, enrolled agent, or tax attorney can confirm which taxpayer and form apply and whether any deadlines or corrections remain open.