California FTB Notice Assessment Information – Head of Household (FTB 4224B ENS)

The FTB 4224B ENS is California’s Assessment Information notice specifically targeting Head of Household filing status. The FTB has determined that the HOH status you claimed on your California return may not be correct, and it’s proposing additional tax based on the difference between your HOH tax rate and the single or married filing separately rate. Head of Household gives you a wider tax bracket and a larger standard deduction — for 2024, the California HOH standard deduction is $10,726 versus $5,363 for single filers.

California has been aggressive about HOH audits because it’s one of the most commonly misused filing statuses. The FTB’s automated systems flag returns where the HOH claim doesn’t match expected patterns — claimed dependents aren’t on a California birth record, the dependent is claimed by another filer, or you’re showing a filing pattern inconsistent with maintaining a home for a qualifying person. The FTB 4224B is the formal notice initiating its challenge to your claimed status.

The notice has 60-day response window. You’ll need to prove you actually qualify for HOH by showing you paid more than half the cost of maintaining a home and that a qualifying person lived there for more than half the year. The Reed Corporation handles FTB 4224B responses regularly and knows exactly what documentation the FTB wants to see.

To defend Head of Household status against an FTB 4224B, you need to prove three things: you were unmarried (or considered unmarried) at year-end, you paid more than 50% of the cost of maintaining your home during the year, and a qualifying person lived in your home for more than half the year. California follows the federal definition of HOH under IRC Section 2(b), but also has California-specific verification requirements built into its audit process.

Documentation the FTB typically wants: utility bills, rent receipts, or mortgage statements in your name showing you paid housing costs; school records, medical records, or other documents showing the qualifying person’s address matched yours; birth certificates or adoption records establishing the qualifying relationship; and proof the dependent lived there — a school enrollment letter or doctor’s records listing your address work well. If you’re claiming a parent as a qualifying relative (not a child), you’ll also need to document that you paid more than half their support.

Situations where FTB 4224B challenges succeed most often: the claimed child’s other parent also filed as HOH using the same child, the child spent significant time with both parents and it’s unclear who provided the primary home, or the taxpayer was legally married but filing separately without qualifying for ‘considered unmarried’ status. We review your specific situation before preparing the documentation package.

If the FTB has information that the same dependent was claimed by another filer — typically the other parent in a divorced or separated family — you’re in a ‘competing claim’ situation. Both parties have been flagged, and the FTB will assess additional tax on the party whose claim it determines is weaker. The tiebreaker rules under California law (which follow federal IRC Section 152) favor the parent with whom the child lived more days during the year. If it’s exactly equal, the parent with the higher AGI wins.

You’ll need to prove more days of residence than the other claimant. School attendance records, pediatrician records, extracurricular activity sign-in sheets, and text messages or emails documenting pickup and drop-off arrangements are all useful. A written custody agreement helps establish the baseline, but actual time spent matters more than what the custody order says. If you have a divorce decree granting you the right to claim the dependent through a Form 8332 release, that governs the federal return but California has its own rules and may not automatically honor the federal agreement.

We help clients in competing HOH disputes gather the right documentation and present it clearly to the FTB. The most important thing is responding within the 60-day window with a complete package — a piecemeal response that requires follow-up extends the timeline significantly and often leads to the FTB deciding against you by default.

The tax difference depends on your income level, but the gap between Head of Household and Single filing status in California is meaningful. For 2024, the HOH standard deduction of $10,726 versus $5,363 for single filers creates a $5,363 difference in taxable income. At California’s 9.3% marginal rate (which kicks in at $68,350 for single filers), that’s roughly $499 in additional tax from the standard deduction difference alone. The bracket differences add more on top.

California’s 10.3% bracket starts at $338,639 for HOH but $338,639 for single — the brackets are actually the same at higher income levels. The biggest tax impact from an HOH reclassification happens in the middle income ranges where the wider HOH brackets provide the most shelter. Add back the dependency exemption credit ($433 per qualifying person in California for 2024), plus any credits that phase out differently under HOH versus single status, and the total additional tax can range from a few hundred to several thousand dollars depending on your situation.

The FTB 4224B notice will show exactly what California is proposing. We review that calculation for accuracy because the FTB’s automated assessment sometimes uses incorrect figures for interest or doesn’t account for credits correctly. Even when the underlying status change is valid, the assessment amount may still be wrong.

Yes, this is one of the lesser-known HOH situations — you can qualify as Head of Household by paying more than half the cost of maintaining a separate home for a qualifying parent, even if you don’t live there yourself. The parent must qualify as your dependent under either the qualifying child or qualifying relative rules, and you must have paid more than 50% of the household expenses for the parent’s home. This exception is specifically available for parents only — not other relatives.

To prove this for an FTB 4224B challenge, you’d need to show: the parent’s address (different from yours), documentation that you paid more than half their housing costs (rent, utilities, groceries, and similar expenses count), and proof that the parent qualifies as your dependent under the qualifying relative rules — meaning they had less than $4,700 in gross income (2024 threshold) and you provided more than half their total support. Medical bills and housing costs you paid on their behalf both count toward the support calculation.

This type of HOH claim is legitimate but harder to document because the supporting person and the qualifying person are at different addresses. The FTB’s automated flagging systems frequently challenge it because it doesn’t fit the typical pattern. We’ve successfully defended this type of HOH claim with the right documentation — financial statements showing transfers to the parent’s household expenses, plus evidence of the dependency relationship.