If you think understanding spousal support amounts and duration is complicated, wait until you try to figure out the tax implications! This is where things get genuinely confusing, and I’m not exaggerating when I say that California has created one of the most perplexing spousal support tax situations in the country.
But here’s critical news if you’re divorcing in 2026 or later: California just changed the rules. Starting January 1, 2026, California will finally conform to federal tax law for spousal support. This means the split tax treatment I’m about to describe will only apply to agreements finalized before the end of 2025. Let me explain what this means for you.
The current situation through December 31, 2025
Right now, federal and California state tax law treat spousal support completely differently. What’s not deductible or taxable at the federal level IS deductible and taxable at the state level. This creates a split treatment that confuses taxpayers, accountants, and even some attorneys.
Before January 1, 2019, the paying spouse could deduct alimony payments from their taxable income, and the receiving spouse had to report it as taxable income. This created a tax benefit that could be shared between spouses and made spousal support more economically efficient.
Then came the Tax Cuts and Jobs Act of 2017, which eliminated the alimony deduction for federal taxes. For any divorce or separation agreement executed after December 31, 2018, spousal support is no longer deductible by the payer and no longer taxable income to the recipient at the federal level.
This was a massive change. It fundamentally altered the economics of spousal support because the paying spouse now pays with fully taxed dollars, while the receiving spouse receives tax-free money.
California said “not so fast”—but only temporarily
When the federal government eliminated the alimony deduction, California chose not to follow suit. For California state income tax purposes, spousal support has remained deductible by the paying spouse and still counts as taxable income for the receiving spouse through the end of 2025.
This created an unusual situation where you have one tax treatment for federal taxes and a completely different tax treatment for California state taxes. The same spousal support payment is not deductible on your federal return, but is deductible on your California return. It’s not federally taxable income to the recipient, but it is taxable income for California purposes.
The big change starting January 1, 2026
California recently enacted Senate Bill 711, which will conform California’s tax treatment of spousal support to federal law. For any spousal support agreement entered into after December 31, 2025, spousal support will be neither deductible for the paying spouse nor taxable income for the receiving spouse at both the federal and California state level.
This change also applies to modifications of existing agreements made after December 31, 2025, but only if the modification expressly provides that Senate Bill 711 applies. If you have an existing spousal support agreement in California and you modify it after 2025 without specifically invoking SB 711, the old tax treatment should continue to apply to that agreement.
What this means if you’re finalizing your divorce before 2026
If your divorce agreement is executed before January 1, 2026, you’ll still have the split tax treatment I described. Let me use real numbers to show how this works. Say you’re paying $3,000 per month in spousal support, or $36,000 per year. You’re in the 24% federal tax bracket and the 9.3% California tax bracket.
For your federal taxes, you get no deduction for that $36,000. It comes out of your after-tax income. If you’re earning $150,000, you’re taxed on the full $150,000 at the federal level.
For your California taxes, you can deduct that $36,000. So your California taxable income would be $114,000, saving you about $3,348 in California state taxes.
Now flip to the receiving spouse. They receive $36,000 in spousal support. For federal tax purposes, they pay no tax on it—it’s tax-free income. For California tax purposes, they have to report it as income and pay California income tax on it. If they’re in the 9.3% California bracket, they’d owe about $3,348 in California taxes on that support.
See how this works? The federal and state treatments are mirror images, but the confusion of tracking this split treatment is real. And it affects how much support each spouse actually values.

What this means if you’re finalizing your divorce in 2026 or later
If your divorce agreement is executed on or after January 1, 2026, the tax treatment becomes much simpler. Spousal support will be completely tax-neutral. The paying spouse gets no deduction at either the federal or state level. The receiving spouse owes no tax on the support at either the federal or state level.
This simplification eliminates the confusion of tracking different treatments for federal and state returns, but it also changes the economics of spousal support negotiations. The paying spouse will be paying entirely with after-tax dollars and will receive no tax benefit whatsoever. The receiving spouse will be receiving entirely tax-free income.

The timing matters enormously
If you’re in the middle of divorce negotiations and your case might extend into 2026, timing becomes a critical strategic consideration. Finalizing your agreement before December 31, 2025 means you’ll maintain the California deduction and taxable treatment. Finalizing after January 1, 2026 means you’ll have the simpler but potentially less tax-efficient fully tax-neutral treatment.
Which is better? It depends entirely on your specific circumstances, your relative tax brackets, and your financial situations. In some cases, the California deduction provides real value that can make higher support amounts economically feasible. In other cases, the simplicity and predictability of the new tax-neutral treatment might be preferable.

The negotiation implications are significant
This change fundamentally affects how we need to think about spousal support negotiations, making a mediator with financial expertise even more invaluable. We need to think through the real after-tax economics of any support proposal under the specific tax regime that will apply to your agreement.
For agreements finalized before 2026 with the split treatment, there’s still some tax efficiency to work with. The paying spouse receives a California state deduction, which effectively subsidizes part of the support through reduced state taxes. The receiving spouse pays California tax, but often at a lower rate. This creates some tax benefit that can be shared between spouses.
For agreements finalized in 2026 or later with full tax neutrality, there’s no tax benefit to work with at all. The paying spouse is paying entirely with after-tax dollars with no deductions anywhere. This means they have less ability to pay higher amounts because they get no tax break whatsoever. From a paying spouse’s perspective, every dollar of support costs them a full dollar of earnings.
From the receiving spouse’s perspective, they’re getting entirely tax-free money, which is valuable. But without the California deduction benefiting the paying spouse, there may be less money available to negotiate for in the first place.
In mediation, I help couples calculate the real after-tax value of different support proposals under whichever tax regime will apply to their agreement. We can’t just look at the gross numbers—we need to understand what each spouse actually nets after all taxes are paid. This kind of analysis requires understanding the federal and California tax treatment and doing the math correctly for your specific timing.
You can still choose not to take the California deduction (for pre-2026 agreements)
For agreements finalized before January 1, 2026, you’re not required to take the California state tax deduction for spousal support. You can choose not to claim it as a deduction on your state taxes, which means the receiving spouse doesn’t have to report it as taxable income for California purposes. This essentially allows you to opt into the post-2025 treatment even if your agreement is finalized before 2026.
Why would you ever choose not to take a tax deduction? There are actually several good reasons. Maybe you want to simplify your taxes and align your federal and state treatment. Maybe you’re negotiating a specific support amount and you’re willing to give up the California deduction in exchange for other concessions. Maybe you’re trying to structure your agreement in a way that will feel more fair and sustainable over time.
In mediation, we can discuss whether it makes sense to opt out of the California tax treatment for pre-2026 agreements. We can run the numbers both ways and see which approach creates better overall outcomes for your specific situation. This flexibility is one of the advantages of negotiating cooperatively—you can structure your agreement in ways that make the most sense for your circumstances.
The complexity of doing your taxes
For agreements finalized before 2026, let me be honest about the practical challenges you’ll face at tax time. You’ll need to complete your federal tax return treating spousal support as neither deductible nor taxable. Then you’ll need to complete your California return with spousal support treated as deductible for the payer and taxable for the recipient.
Your tax software should handle this automatically if you input the information correctly, but you need to make sure you’re categorizing things properly. If you work with an accountant, they need to understand this split treatment. Not all tax preparers are entirely up to speed on the spousal support rules, particularly this federal-state split.
For agreements finalized in 2026 or later, your taxes become much simpler. You’ll treat spousal support the same way on both your federal and California returns—as neither deductible nor taxable. This eliminates much of the confusion and potential for error.
You’ll still need to report spousal support correctly to the IRS and the Franchise Tax Board. There are specific forms and reporting requirements. Getting this wrong can trigger audits or notices you’ll need to address.
Documentation matters
Because of the tax implications and the timing of this change, documenting your spousal support agreement is more critical than ever. Your divorce settlement agreement should clearly specify the amount of support, the duration, and the date the agreement is executed. The execution date determines which tax regime applies to your agreement.
If your agreement is executed before January 1, 2026, you should specify whether you’re opting out of the California tax treatment. If you modify an existing agreement after December 31, 2025, you need to specify whether the modification expressly invokes Senate Bill 711 and adopts the new tax-neutral treatment.
If you’re taking the California deduction for a pre-2026 agreement, you need to be prepared to document that these payments meet the legal requirements for deductible alimony. They must be made pursuant to a divorce or separation agreement, paid to or on behalf of your ex-spouse, and designated as spousal support.
Why my financial expertise matters here
I’m not a CPA or a tax attorney, and I always recommend clients work with qualified tax professionals for specific tax advice. But having a mediator who understands the financial and tax implications of spousal support arrangements is invaluable when negotiating your agreement, especially during this transition period.
I can help you understand the after-tax economics of different proposals under the tax regime that will apply to your agreement. I can explain how the timing of your agreement execution affects your tax treatment. I can help you think through whether it makes sense to finalize before or after the 2026 change, or whether to opt out of California tax treatment for a pre-2026 agreement. I can structure support arrangements that are tax-efficient and compliant with the rules.
This is precisely where my MBA in Finance and my training from the Institute for Divorce Financial Analysis come into play. The tax implications of spousal support aren’t just technical details—they’re fundamental to determining what amounts are fair and sustainable. Getting this wrong can cost you thousands of dollars or create arrangements that don’t actually work financially.
The bottom line on taxes and support
The tax treatment of spousal support in California is changing in a major way. Through December 31, 2025, California has a split treatment where federal and state law diverge. Starting January 1, 2026, California will conform to federal law and spousal support will be tax-neutral at both levels for new agreements.
This transition creates both complexity and opportunity. The timing of your agreement execution matters enormously. Understanding whether the split treatment or the tax-neutral treatment applies to your situation is critical to negotiating fair spousal support. You need to look beyond the gross numbers and understand the after-tax reality under the specific tax regime that applies to your agreement.
In mediation, we work through these tax implications together so you can make informed decisions about support that reflect the real financial impact on both of you. The tax rules are complex and changing, but your agreement doesn’t have to be confusing. It just needs to be thoughtfully structured by someone like me who understands what’s at stake and can help you navigate this transition effectively.





