IRC §2 supplies the federal definitions and special rules used to identify a qualifying surviving spouse and a head of household. Those statuses can produce different federal rate brackets, standard deductions, credits, and filing options than single filing. A Hilo, Hawaii residence does not change the federal tests, but Hawaii filing must be completed separately.
Section 2(a): qualifying surviving spouse
A taxpayer may generally use qualifying-surviving-spouse status for the two years after the year a spouse dies when the taxpayer remains unmarried, can claim the child as a dependent, and maintains a home for that child. The child generally must live in the home for the required period, subject to statutory temporary-absence rules. This status preserves joint-return rate treatment for a limited period, helping a newly widowed taxpayer transition financially.
Eligibility depends on the detailed dependency and household rules, not simply on a death certificate or the child’s school address. Review the current Form 1040 instructions for adoption, foster-child, divorce, and support situations.
Section 2(b): head of household
For federal purposes, a taxpayer generally must be unmarried or considered unmarried at year-end, pay more than half the cost of keeping up a home for the year, and have a qualifying person. A qualifying child usually must live with the taxpayer more than half the year. A qualifying parent can sometimes qualify even when the parent does not live in the taxpayer’s home, if the taxpayer maintains the parent’s principal home and meets the support rules.
“Considered unmarried” is a technical rule. A married taxpayer may qualify only if the spouses lived apart for the last six months of the year, the taxpayer paid more than half the household costs, the home was the principal home of a qualifying child for the required period, and the other requirements are met.
What counts as keeping up a home?
Household costs generally include rent, mortgage interest, property taxes, home insurance, repairs, utilities, and food eaten in the home. They do not generally include clothing, education, medical expenses, vacations, life insurance, or transportation. Keep a worksheet and receipts so the more-than-half test can be supported.
Hilo examples
Example 1: A widowed Hilo parent’s spouse died in 2025. The parent remains unmarried, supports a dependent child, and maintains the child’s home. The taxpayer may be able to use qualifying-surviving-spouse status for 2026 and 2027 if all requirements continue.
Example 2: An unmarried Hilo taxpayer pays 70% of household costs and the taxpayer’s qualifying child lives there eight months. The taxpayer may meet the head-of-household tests. The final determination still requires dependency, residency, and support analysis.
Why filing status matters
Filing status affects the §1 rate table, standard deduction, eligibility for credits, and sometimes the tax on investment income. It does not allow a taxpayer to choose whichever status produces the lowest tax. Use the status supported by the facts at year-end and retain custody, school, support, and housing records.
Hawaii considerations
Hawaii has its own filing-status instructions, income-tax rates, deductions, and credits. Federal qualifying-surviving-spouse or head-of-household treatment is an important starting point, but complete Form N-11 or N-15 using current Hawaii Department of Taxation guidance. Do not assume every federal credit or deduction carries over identically.
Bottom line
IRC §2 is a definitions section with significant practical consequences. Document marital status, household costs, dependent relationships, and where each person lived during the year. This educational article is not individualized tax advice; verify the current IRS and Hawaii instructions before filing.
