Article Summary
Divorce settlements are negotiated around dollar figures, but not every dollar is worth the same amount after taxes. A dollar of alimony, a dollar of home equity, and a dollar in a 401(k) each carry a different tax treatment, and a settlement that looks equal on paper can leave one spouse with meaningfully less after-tax wealth than the other. This is one of the areas where working with an experienced divorce attorney before you sign, rather than after, makes a direct financial difference.
This guide covers how alimony is taxed under current federal law, what happens to your taxes when the marital home is sold, who has the right to claim children as dependents after a divorce, and the tax mistakes we see divorcing couples make before their case is finalized. None of this replaces advice from a CPA or tax preparer for your specific return, but understanding the rules before you negotiate puts you in a far stronger position at the table.
The decisions made in a settlement agreement about who receives what asset, and in what form, are difficult to undo once a case is final. Getting the tax picture right before you sign is far easier than trying to fix it afterward.
Is Alimony Taxable in Colorado After a Divorce?
For any divorce or separation agreement executed after December 31, 2018, alimony and separate maintenance payments are not deductible by the paying spouse and are not included in the recipient spouse’s taxable income, under changes made by the Tax Cuts and Jobs Act. For agreements executed before 2019 that haven’t been modified to adopt the new rule, the older treatment still applies: alimony is deductible by the payer and taxable to the recipient.
This is a significant shift from the tax treatment most people assume still applies. Under the pre-2019 rules, a paying spouse in a high tax bracket could deduct alimony payments, which often made larger support amounts more feasible to negotiate. According to the IRS, that deduction and the corresponding income inclusion no longer exist for agreements finalized under current law, which changes the math on both sides of a negotiation.
As a divorce attorney, we’ve had clients come in assuming they could deduct support payments the way a parent or older sibling did years earlier, only to learn the rule changed for their own case. That assumption, left uncorrected, can distort an entire settlement negotiation. A support figure that made sense under the old deduction may need to be renegotiated once both parties understand that the paying spouse is covering the full cost with no tax offset.
Before agreeing to a specific support figure, review how the payment will actually be treated under current law with your divorce attorney and a tax professional.
How Does Selling the Marital Home Affect Your Taxes After Divorce?
If you sell your home and have a capital gain, you may be able to exclude up to $250,000 of that gain from your taxable income if you file as a single filer, or up to $500,000 if you and your spouse still file a joint return for the year of sale, provided you meet the ownership and use tests. Under IRS rules, you generally need to have owned and lived in the home for at least two of the five years before the sale to qualify, and timing the sale relative to your divorce affects which exclusion amount applies.
Timing matters more than most divorcing couples realize. If the home is transferred to one spouse as part of the settlement and that spouse later sells it as a single filer, only the $250,000 exclusion applies to that spouse’s future sale, even though the gain accrued while both spouses owned the home together. If the couple sells the home while still married and filing jointly, the larger $500,000 exclusion may apply to the combined gain. A property transferred between spouses as part of a divorce settlement is generally not a taxable event at the time of transfer, but the tax consequences show up later, when the receiving spouse eventually sells.
We worked with a client whose settlement gave her the family home outright, with an unrealized gain built up over eighteen years of appreciation. Because she planned to sell within the next few years as a single filer, we structured the rest of the settlement to account for the smaller exclusion she’d be working with, rather than treating the home’s current market value as if it were fully hers to keep tax-free. For couples with significant home equity, this kind of analysis belongs in the negotiation, not as an afterthought. It’s also worth reviewing how retirement accounts are divided alongside the home, since 401(k)s and pensions carry their own tax treatment that interacts with the rest of your settlement. Our divorce team can walk through both together before you finalize anything.
Who Gets to Claim the Children as Dependents After a Colorado Divorce?
Under federal tax law, the custodial parent, generally the parent with whom the child lived for the greater number of nights during the year, has the right to claim the child as a dependent and claim the associated child tax credit, regardless of what a divorce decree says, unless that parent signs a specific IRS release form. A divorce settlement can allocate the dependency claim differently between the parents, but that agreement only controls the IRS outcome if it’s backed up by the correct paperwork.
Many Colorado settlement agreements attempt to alternate the dependency claim by year, or divide multiple children between the parents. According to IRS Publication 504, the noncustodial parent can only claim a child as a dependent if the custodial parent signs Form 8332, releasing the claim for that specific year, and the noncustodial parent attaches that signed form to their return. A settlement agreement that says a parent “gets” the dependency claim in odd years, without Form 8332 actually being executed each applicable year, frequently results in a rejected e-filed return or an IRS notice when both parents claim the same child.
We’ve seen this play out with a Denver couple whose settlement clearly allocated dependency claims by year, but the custodial parent never signed the required forms after the first year. The noncustodial parent’s return was flagged, and resolving it took months and required going back to enforce the original settlement terms. Building the Form 8332 requirement directly into your parenting plan or settlement agreement, with a specific deadline each year, avoids this entirely. Our family law team builds this level of detail into custody and support agreements specifically to prevent this kind of dispute.
What Tax Mistakes Do Divorcing Couples Make Before Finalizing Their Case?
The most common tax mistakes we see before a divorce is finalized are treating pre-tax and after-tax assets as equal in value, failing to update withholding and estimated payments for the new filing status, forgetting to execute the paperwork needed to allocate dependency claims, and not confirming the tax treatment of a settlement figure before agreeing to it.
A dollar in a traditional 401(k) is not the same as a dollar in a Roth IRA or a dollar of home equity. The 401(k) dollar will be taxed on withdrawal, the Roth dollar generally will not, and the home equity dollar may carry capital gains exposure depending on the exclusion available. Colorado is an equitable distribution state under C.R.S. § 14-10-113, which means the court divides marital property fairly, not necessarily by splitting each account in half, and a fair division has to account for these after-tax differences to actually be fair.
We reviewed a proposed settlement where one spouse was offered the full value of a traditional 401(k) balance while the other kept a similarly sized brokerage account with a much smaller embedded gain. On paper, the numbers matched. After accounting for the deferred tax liability on the 401(k), the offer was worth substantially less than it appeared. Catching this before signing, rather than after, is the difference an experienced advisor makes in a settlement negotiation.
If your settlement includes retirement accounts, real estate, or a business interest, talk with our office before you finalize anything.
What Do People Ask a Divorce Attorney About Taxes and Settlements?
Q: Is alimony tax deductible in Colorado? A: Not under current federal law. For divorce or separation agreements executed after December 31, 2018, alimony is not deductible by the payer and not taxable to the recipient. Older agreements not modified to adopt the new rule still follow the previous tax treatment.
Q: Do I have to pay capital gains tax if I sell my house during a divorce? A: You may qualify to exclude up to $250,000 of gain as a single filer or $500,000 filing jointly, provided you meet the ownership and use tests under IRS rules. Whether you sell before or after the divorce is finalized, and who ends up owning the home, both affect which exclusion applies.
Q: Who claims the children on taxes after a divorce? A: The custodial parent generally has the right to claim the children as dependents, regardless of what the divorce decree states, unless that parent signs IRS Form 8332 releasing the claim to the other parent for a specific year.
Q: Does dividing a 401(k) in divorce trigger a tax penalty? A: Not if it’s done correctly through a Qualified Domestic Relations Order. A properly drafted QDRO allows the transfer without triggering the usual 10% early withdrawal penalty, though the receiving spouse will still owe ordinary income tax on future withdrawals from a traditional account.
Q: What filing status should I use the year my divorce is finalized? A: Your marital status on December 31 of the tax year generally determines your filing status for that entire year. If your divorce is finalized on or before that date, you file as single or head of household; if it’s still pending, you may still need to file as married.
Ready to Finalize Your Divorce Without a Tax Surprise?
A settlement that ignores tax consequences can look fair at signing and feel very different a year later, once tax returns are filed under the new terms. Reviewing the tax treatment of every major asset and support term before you agree to anything protects the outcome you actually negotiated for.
At Lewis & Matthews, P.C., we help Denver-area clients understand the full financial picture of a divorce settlement, not just the headline numbers. If you’re negotiating a settlement or preparing to finalize your case, call (303) 329-3802 or contact us online to speak with a divorce attorney before you sign.
