The tax return changes the year after the funeral, and almost nobody is told in advance.

A couple files jointly through the entire year in which one spouse dies. From the following year the survivor files as a single taxpayer. Household income does not fall by half. The larger Social Security benefit continues and the smaller one stops, a pension often continues at whatever survivor percentage was elected decades ago, and the portfolio is unchanged. But every threshold is cut roughly in half at once.

This guide makes that arithmetic instead of a warning.

Inside, 18 pages: the widow’s penalty worked three ways for one household, including the isolation test that holds income identical and shows the penalty alone. What happens to each account, one at a time. Social Security survivor rules, including the ages that change the number. The first 30, 90 and 365 days in order, so nothing gets done in the wrong month. The documents to gather and who asks for them. A printed 90-day checklist.

Plus a live Excel workbook that computes the same household two ways, joint and single, and reports the difference as one number, then shows how much Medicare headroom the survivor loses.

Every figure carries its primary source. 2026 edition. Instant download, letter size. 30-day refund, no questions asked.

Educational material. Not tax, legal or investment advice.