Divorce Calculator

Divorce is not a series of isolated events. It is one deeply connected financial system where every single number changes every other number.

Think about it this way. Your custody split determines how much child support you pay or receive each month. That child support payment directly shapes your post-divorce monthly budget. And that budget is what decides whether you can actually afford to buy out your spouse’s share of the marital home. Change the custody percentage by just 10%, and the child support figure shifts, the budget gap widens, and suddenly the home buyout becomes financially impossible.

Traditional divorce tools miss this completely. A standalone alimony calculator gives you one number with no connection to anything else. A basic custody calendar shows you a schedule but ignores your budget. They treat your divorce like twelve separate problems when it is actually one complex system.

This 12-in-1 Divorce Financial and Custody Suite solves that. Every number you enter in the first card flows automatically into every card that follows. Your real estate value in Card 1 updates Module 8’s home equity. Your alimony in Card 4 auto-fills into your child support in Card 5, your budget in Card 7, and your wealth recovery curve in Card 12. Look at the 12-in-1 Chain Flow diagram at the top of the calculator suite to see exactly how data cascades from card to card in real time.

Quick Start Guide: For the most accurate planning, fill out the modules in order. Your inputs in Card 1 (Net Worth) and Card 4 (Alimony) automatically flow into downstream calculators, including Child Support, Budget, and Wealth Recovery. This builds your complete, real-time financial roadmap in minutes.

Establishing the Marital Estate

Marital Net Worth and Asset Inventory

Tracing Separate Property vs. Commingled Marital Assets

The first step in any divorce financial plan is building a complete inventory of everything you and your spouse own together. This includes real estate, bank accounts, investment portfolios, retirement accounts, vehicles, and household valuables.

Here is a critical concept most people overlook: not all assets are automatically marital property. Assets you owned before the marriage, or received as an inheritance or a gift during the marriage, are typically classified as separate property and are excluded from the divisible marital pool.

However, separate property can lose its protected status through a legal process called commingling. If you owned a house before your marriage but then used joint salary income to pay the mortgage for ten years, that separate asset has likely become commingled with marital funds. Courts in most states treat commingled assets as marital property, which means they become subject to division. This is one of the most contested issues in high-asset divorce cases.

What to enter in Card 1 (Marital Net Worth):

• Real estate current market value
• All bank and cash savings balances
• Investment and brokerage account values
• Retirement account balances (401k, IRA, pension)
• Vehicle values and personal property

As you type, the Asset Composition Chart updates live to show you a visual breakdown of your estate’s allocation across categories. This makes it immediately clear where the biggest assets — and the biggest negotiation points — actually sit.

Asset Division and Equitable Distribution Modeler

Calculating the Cash Equalization Payment

Once you know your total marital asset pool, the next question is: how do you divide it? The answer depends heavily on which state you live in.

There are two legal frameworks governing asset division in the United States:

• Community Property States (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin): The law presumes a strict 50/50 split of all assets and debts acquired during the marriage. The division is automatic and mandatory by statute.
• Equitable Distribution States (all remaining states): Courts divide property based on what is “fair and equitable,” which may result in a 60/40 or 55/45 split. Factors like marriage length, earning power, age, health, and each spouse’s contributions all influence the final split.

When one spouse keeps a high-value physical asset like the marital home, a Cash Equalization Payment is required to balance the division. For example, if the target split is 50/50 but Spouse A keeps $400,000 of a $650,000 asset pool, Spouse A owes Spouse B a cash equalization payment of $75,000 to reach the agreed target.

Use the slider in Card 2 (Asset Division) to test different split percentages. The calculator shows you the direction and exact dollar amount of the equalization payment needed in real time.

Marital Debt and Liability Apportionment

The marital asset number alone does not tell you the full story. Every dollar of joint debt you carry must also be divided, and the true measure of what you are actually walking away with is your Net Marital Estate.

Common joint debts that must be apportioned include:

• Mortgage balance on the marital home
• Car loan balances
• Credit card debt accumulated during the marriage
• Personal or home equity loans
• Student loans (if used to benefit the household)

In many equitable distribution states, joint debt is not necessarily split 50/50. Courts often divide debt in proportion to each spouse’s post-divorce economic strength. If one spouse earns significantly more, they may be assigned a larger share of the marital debt load.

Open Card 3 (Marital Debt) and enter each liability. The tool immediately subtracts all debt from your gross asset pool to reveal your true Net Marital Estate. This adjusted net worth figure automatically flows down into Card 12, where it becomes the starting baseline for your long-term wealth recovery projection.

Support Obligations and Custody Logistics

Spousal Support (Alimony) Estimator

Understanding State-Level Alimony Formulas (CA, NY, TX)

Alimony — also called spousal support or spousal maintenance — exists to reduce the economic inequality created when one spouse sacrifices career advancement to support the household or raise children. It is not a punishment. It is a financial bridge designed to give the lower-earning spouse time to become financially self-sufficient.

Courts use several key factors to determine alimony:

• Length of the marriage (longer marriages generally produce longer or larger alimony awards)
• Income disparity between spouses
• Standard of living established during the marriage
• Age and health of each spouse
• Earning capacity and employability

Important legal concept — Imputed Income: If a spouse voluntarily chooses not to work, or works below their actual earning capacity, a court may “impute” income to them. This means the court assigns a theoretical income based on their education, work history, and local job market. Imputed income can significantly reduce the alimony obligation, since the receiving spouse is treated as if they are already earning that amount.

State alimony formulas differ significantly:

In Card 4 (Alimony), select your state guideline, enter both gross incomes, and input the years married. The monthly alimony figure and payment duration calculate automatically. Critically, this monthly amount auto-fills into Card 5 (Child Support) and Card 7 (Budget) so nothing needs to be re-entered downstream.

Child Support Worksheet and Estimator

How the Income Shares Model Calculates Pro-Rata Parental Obligations

The majority of U.S. states use the Income Shares Model for child support calculations. The core principle is straightforward: a child should receive the same percentage of their parents’ combined income that they would have received if the family had stayed together.

Here is how the math works:

Add-on costs are also divided proportionally:

• Health insurance premiums for the child are split by each parent’s income share
• Childcare costs (daycare, after-school care) are divided the same way
• Extraordinary medical expenses and extracurricular costs may also be apportioned

For example, if Spouse A earns 65% of the combined parental income and the basic support obligation for two children is $2,000 per month, Spouse A’s gross share is $1,300. After applying a 40% parenting time credit, their net monthly payment drops to approximately $780.

The parenting time slider in Card 5 (Child Support) lets you see instantly how adding even 10% more overnights with one parent can shift the monthly obligation by hundreds of dollars. This direct link between custody and support dollars is exactly why these two modules must be planned together, not separately.

Under IRC 1041, transfers of property between spouses incident to divorce are generally tax-free events. Additionally, child support payments are never taxable income for the recipient and never tax-deductible for the payer under federal law.

Co-Parenting Time and Custody Schedule Analyzer

Calculating Travel Friction and Transition Fatigue

A custody percentage is an abstraction. What parents actually live is a weekly schedule, and the design of that schedule has a direct impact on children’s stability, parental wellbeing, and practical logistics.

Common custody schedule templates include:

• Alternating weeks (50/50): Child spends one full week with each parent
• 2-2-3 rotation (50/50): Two days, two days, three days alternating each week
• 4-3 / 3-4 rotation (57/43): Four days with one parent, three with the other
• Every other weekend (80/20): Primary parent has most time, secondary parent has alternating weekends plus one weekday evening

The number of annual custody transitions matters more than most parents realize. High-transition schedules with many short handoffs create “co-parenting fatigue,” particularly when the parents live far apart. Each transition requires coordination, travel, and an emotional adjustment for the child.

The suite’s Travel Friction Index quantifies this risk. It combines annual transition count, distance between homes, and exchange method (school pickup vs. direct handoff) into a single score. A score above 60 out of 100 is flagged as high risk for co-parenting conflict.

In the Interactive 4-Week Custody Calendar in Card 6, click on any individual day to manually toggle it between parents. This lets you customize beyond the standard templates to match your family’s exact school, work, and travel schedule. The overnight totals update instantly, and any custom changes immediately recalculate the child support figure in Card 5.

Post-Divorce Cash Flow and Asset Disposition

Post-Divorce Monthly Budget and Cash Flow Planner

Here is the financial reality that hits most divorcing spouses hard: you are now running two separate households on the same total income that previously ran one. Housing costs alone nearly double for the household that moves out. Add utilities, food, transportation, and insurance, and the monthly pressure is immediate.

Card 7 (Budget Planner) auto-populates the following from earlier modules:

• Monthly alimony obligation from Card 4
• Monthly child support payment from Card 5
• Post-divorce starting net worth from Cards 1–3

You then enter each spouse’s individual fixed expenses: rent or mortgage, utilities, groceries, health insurance, transportation, and any remaining debt payments. The tool displays a side-by-side cash flow comparison showing each spouse’s monthly surplus or deficit.

A monthly deficit is not just uncomfortable — it is a red flag for future financial instability. A budget gap signals that the proposed support arrangement, housing choice, or both need to be reconsidered before finalizing the divorce settlement.

Post-divorce housing costs are also central to your debt-to-income (DTI) ratio, which lenders evaluate when either spouse applies for a new mortgage or apartment lease after the divorce.

Marital Home Disposition Decision Matrix

Buyout vs. Sell: Assessing Mortgage Affordability and Refinance Rates

The marital home is typically the largest single asset in the divorce estate. And the decision about what to do with it carries consequences that ripple through every other financial module.

The three main options are:

1. Sell and Split: Both spouses sell the home, deduct selling costs (typically 5–6%), and divide the net equity according to the agreed split. This is the cleanest option financially.
2. Spouse A Buys Out Spouse B: The staying spouse refinances the mortgage in their sole name, pays the departing spouse their equity share in cash, and takes full ownership.
3. Deferred Sale: Both spouses agree to delay the sale for a set period, often until the youngest child finishes school. This preserves stability for children but creates ongoing co-ownership complexity.

The Mechanics of a Marital Home Buyout:

A buyout requires the staying spouse to qualify for a new mortgage in their own name alone, based solely on their post-divorce income. This is a major hurdle in a high interest rate environment. The lender will evaluate:

• Post-divorce gross monthly income (alimony received counts as qualifying income)
• Credit score in the staying spouse’s individual name
• Total debt obligations including the new mortgage

The standard lending guideline is that PITI (Principal, Interest, Taxes, Insurance) should not exceed 28% of gross monthly income, and total debt obligations should not exceed 36% (the 28/36 DTI rule). Card 8 uses a 40% housing-to-income threshold as a more realistic post-divorce affordability ceiling.

The departing spouse’s name must also be legally removed from the property title using an Interspousal Transfer Grant Deed, and their name removed from the mortgage through the refinance. Simply being removed from the deed does not release a spouse from mortgage liability.

Use Card 8 (Home Matrix) to model all three options side by side. The tool calculates net equity after selling costs and flags the buyout as financially unfeasible if the new mortgage payment exceeds the affordability threshold. For a deeper analysis of whether keeping the home makes financial sense, run a home affordability analysis or a rent vs. buy evaluation.

Retirement Account Valuation and QDRO Estimator

Factoring Deferred Tax Liabilities into Retirement Splits (ERISA & QDROs)

This is the most misunderstood asset class in divorce. A $125,000 balance in a pre-tax 401(k) is not the same as $125,000 in a savings account. The retirement balance carries a deferred tax liability — when that money is eventually withdrawn in retirement, it will be taxed as ordinary income. That future tax obligation must be factored into any equitable division today.

A Qualified Domestic Relations Order (QDRO) is the legal mechanism that allows retirement funds in ERISA-qualified plans (401(k), 403(b), pension plans) to be transferred between divorcing spouses without triggering the standard 10% early withdrawal penalty or immediate income tax.

How the QDRO process works:

• The divorce decree specifies how the retirement account is to be divided
• A separate QDRO document is drafted (typically by a specialist, costing $500–$1,500)
• The plan administrator reviews and approves the QDRO
• The assigned portion is transferred to the alternate payee’s own retirement account tax-free
• The alternate payee is then responsible for taxes upon their own eventual withdrawal

Under ERISA (Employee Retirement Income Security Act), all ERISA-qualified plans must honor a properly drafted QDRO. IRAs are divided differently — through a transfer incident to divorce process — and do not require a QDRO.

In Card 9 (QDRO Estimator), adjust the deferred tax adjustment slider to apply the correct discount rate for your federal and state tax bracket combination. This converts the nominal retirement balance to its true present economic value, giving you an apples-to-apples comparison when dividing retirement accounts against post-tax liquid assets.

Tax Optimization, Legal Projections, and Long-Term Recovery

Tax Filing Status and Bracket Shift Predictor

Post-Divorce Tax Optimization: Standard Deductions and Child Tax Credits

One of the most financially painful and least discussed consequences of divorce is what tax professionals call the “divorce tax penalty.” When you go from Married Filing Jointly to either Single or Head of Household, your standard deduction drops dramatically:

The drop from Married Filing Jointly to Single is a $14,600 reduction in your deductible income. That alone can push a middle-income earner into a higher marginal tax bracket, costing thousands of dollars more per year.

Head of Household eligibility rules (IRS): To file as Head of Household post-divorce, you must:

• Have been unmarried or considered unmarried on December 31st
• Have a qualifying child living with you for more than 182.5 nights during the year
• Have paid more than 50% of the household maintenance costs

Child Tax Credit (CTC) rules post-divorce: Only the custodial parent (the one with whom the child spends the majority of overnights) is legally entitled to claim the CTC. However, the custodial parent can release this claim to the non-custodial parent by signing IRS Form 8332. Some divorce agreements alternate the CTC claim annually to share the tax benefit.

Alimony tax treatment (post-2018 divorces): Under the Tax Cuts and Jobs Act, for all divorces finalized after December 31, 2018, alimony is neither tax-deductible for the payer nor taxable income for the recipient. This is a major change from pre-2019 law.

Use Card 10 (Tax Predictor) with your marginal tax bracket calculator to model your exact 2026 tax liability under both joint and post-divorce filing statuses.

Divorce Legal Fees and Mediation Cost Projector

The total cost of ending a marriage varies enormously based on one primary variable: the level of conflict between you and your spouse. Attorney time is the most expensive component, and conflict drives attorney time.

The five main divorce pathways, ranked from lowest to highest cost:

• DIY / Uncontested Divorce: You and your spouse agree on everything and file paperwork yourselves. Cost: $300–$1,500 in filing fees.
• Online Mediation: A neutral third-party mediator guides negotiation via video. Cost: $1,500–$5,000 total.
• Professional Mediation with Attorneys: Both spouses have attorneys for advice but resolve issues through a mediator. Cost: $8,000–$25,000 total.
• Collaborative Law: Both spouses and their attorneys sign an agreement to resolve everything outside of court. Cost: $15,000–$40,000 total.
• Full Litigation: Both spouses argue contested issues before a judge. Cost: $30,000–$100,000+ total.

Choosing mediation over full litigation can save $30,000 or more in combined legal fees — money that would otherwise come directly from the marital estate you are trying to divide.

In Card 11 (Legal Cost Projector), use the conflict level slider (1 = amicable to 10 = highly hostile) to apply a multiplier to hourly attorney rates. The tool projects total attorney hours and potential savings from de-escalating to a cooperative resolution path.

Future Financial Recovery and Wealth Rebuilding Simulator

The Phoenix Recovery Curve: Projecting Compound Growth Post-Divorce

Divorce can feel like a financial catastrophe. The Phoenix Recovery Curve shows you that it does not have to be permanent.

This final module takes your post-divorce starting net worth (automatically pulled from Cards 1–3 after legal fees are deducted) and your monthly budget surplus from Card 7, and projects your wealth trajectory forward at 5, 10, and 20 years using compound interest calculations.

The key inputs you control:

• Monthly savings contribution (auto-filled from your budget surplus, but adjustable)
• Annual investment return rate (default 7%, based on long-term S&P 500 historical average)
• Starting net worth (calculated from earlier modules)

The simulator also calculates a specific milestone: Years to Recover Pre-Divorce Net Worth. This answers the question every divorcing person is really asking — “How long until I am financially back to where I was?”

For someone starting with $150,000 in post-divorce net worth and saving $1,100 per month at a 7% annual return, their projected net worth at year 10 is approximately $418,000. Recovery of a pre-divorce net worth of $325,000 takes around 4.3 years.

Connect your post-divorce savings plan to your long-term goals using our retirement savings projection calculator to see exactly how your divorce recovery timeline aligns with your retirement targets.

Case Study: How Changing Custody Time Changed Everything

Let us look at a real-world scenario to show why the interconnected model matters.

Sarah and David are divorcing after 12 years of marriage. They have two children, a home worth $450,000, and a combined income of $155,000. Their initial custody proposal gave David 30% parenting time.

At 30% parenting time, David’s monthly child support obligation came to $1,387. His post-divorce budget showed a monthly deficit of $203. When they ran the home buyout analysis, the calculator flagged that David could not afford to buy Sarah’s equity share because his DTI ratio was too high.

They changed the custody arrangement to 40% for David.

That one change — 10 more percentage points of overnight time — reduced David’s monthly child support to $982, a $405 monthly difference. His budget moved from a $203 deficit to a $202 surplus. And with that surplus, his DTI ratio dropped enough to make the home buyout financially feasible.

This is exactly why all 12 modules must be planned as one system. Changing custody did not just affect a parenting calendar. It changed child support, the budget, and the home disposition outcome — all at once.

The Legal Dividing Line: Equitable Distribution vs. Community Property

Your state’s legal framework is one of the first things that shapes your entire divorce financial plan. The calculator’s asset division slider in Module 2 must be guided by which system governs your marriage.

Community Property States — Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin — operate under a simple rule: all assets and debts acquired during the marriage belong equally to both spouses. The split is 50/50 by law, with limited exceptions.

Equitable Distribution States cover all remaining U.S. states. “Equitable” does not mean “equal.” Courts in these states look at the full picture of the marriage — each spouse’s earning capacity, contributions to the household, length of the marriage, health, and future financial needs — and divide assets in a way deemed fair by the court. A 60/40 or even 70/30 split is entirely possible.

Important edge cases:

• Separate property brought into the marriage is generally excluded from division in both systems, unless commingled
• Gifts and inheritances received during the marriage are typically separate property
• The date of valuation for volatile assets (stock portfolios, business interests) can be contested — this is called the Valuation Date Dilemma, and it matters enormously when markets fluctuate between separation and final decree

Frequently Asked Questions

Is alimony taxable income in 2026?

No. For all divorces finalized after December 31, 2018, alimony is neither taxable income for the recipient nor tax-deductible for the payer under federal law. This changed under the Tax Cuts and Jobs Act. Always verify your state’s treatment, as some states have not conformed to the federal change.

What is a QDRO and do I actually need one?

A Qualified Domestic Relations Order is a court order required to divide any ERISA-qualified retirement plan — such as a 401(k), 403(b), or pension — without triggering the 10% early withdrawal penalty. If your spouse has a workplace retirement plan, you almost certainly need a properly drafted QDRO. IRAs are divided through a separate “transfer incident to divorce” process. QDRO drafting typically costs $500–$1,500 and must be completed before or immediately after the divorce is finalized.

How does custody time actually affect child support?

Under the Income Shares Model, more overnight time with a parent reduces that parent’s net child support obligation. The logic is that the parent who has the child more frequently is directly spending more on that child’s day-to-day needs. A change from 30% to 40% parenting time can reduce monthly child support by $300–$600 depending on income levels.

What is imputed income in a divorce case?

If a spouse is voluntarily unemployed or underemployed — meaning they are capable of earning more but choose not to — a court can assign an “imputed” income to them for purposes of calculating alimony and child support. The court looks at the spouse’s education, work history, and local employment market to determine a realistic earning capacity.

What is the “divorce tax penalty”?

When you go from Married Filing Jointly to Single, your standard deduction drops from $29,200 to $14,600 for 2026. This $14,600 reduction in deductible income means more of your gross income is taxed, often pushing you into a higher marginal bracket. Filing as Head of Household ($21,900 standard deduction) partially offsets this if you qualify.

What is COBRA, and should I include it in my post-divorce budget?

If you were covered under your spouse’s employer health insurance, you will lose that coverage upon divorce. COBRA allows you to continue the same plan for up to 36 months, but you pay the full premium — which is often $400–$800 per month or more for an individual. This is a significant post-divorce budget item that should be entered in Card 7 immediately.

How the 12 Modules Work as One Complete System

The true power of this suite is not any single calculator. It is the shared data state that connects all twelve.

• Change the home value in Card 1 → the marital asset pool updates in Card 2 → net equity updates in Card 8 → monthly mortgage updates in Card 7 → wealth curve updates in Card 12.
• Change the alimony in Card 4 → child support adjusts in Card 5 → both spouses’ budgets update in Card 7 → wealth recovery projections update in Card 12.
• Change the custody percentage in Card 6 → child support recalculates in Card 5 → the budget gap shifts in Card 7.

Every decision ripples through the entire financial picture instantly. That is the difference between a divorce tool and a divorce planning system.

Disclaimer: This calculator provides financial estimates for planning purposes only. It does not constitute legal, tax, or financial advice. Divorce laws vary significantly by state. Please consult a licensed family law attorney, Certified Divorce Financial Analyst (CDFA), and CPA before finalizing any divorce settlement.