California courts use a formula for temporary alimony, but permanent alimony depends on factors a judge weighs case by case

California has two different alimony systems depending on whether you are in a divorce that is still ongoing or one that has been finalized. During the divorce, courts use a statewide formula to calculate temporary support — this is the same calculation in every county. After the divorce is final, a judge sets permanent alimony (called "spousal support" in California) by looking at a list of specific factors, and no two cases produce the same number.

The temporary formula exists to keep support payments consistent while the divorce proceeds. It is built into most court software and produces a result in minutes. Permanent support, by contrast, is negotiated or argued in front of a judge, and the outcome depends heavily on the details of your marriage, your income, and your future earning power.

Key Takeaways

  • Temporary alimony during divorce uses a statewide formula: 40% of the higher earner's net income minus 50% of the lower earner's net income, capped at 50% of the combined net income.
  • Permanent alimony after divorce is set by a judge using ten legal factors, with no formula — income, length of marriage, and age at separation are the most common drivers.
  • The paying spouse's net income (after taxes and mandatory deductions) is what the formula uses, not gross income.
  • A marriage lasting fewer than ten years usually results in support ending at the midpoint of the marriage length, unless the judge finds good reason to extend it.
  • Either spouse can request a modification if income changes significantly or circumstances shift after the order is made.

How the temporary alimony formula works during divorce

While your divorce is pending, California Family Code Section 4320.1 requires courts to use a specific calculation. The formula is: take 40% of the higher earner's net monthly income, subtract 50% of the lower earner's net monthly income, and the result is the temporary support amount. If that number is more than 50% of the combined net income of both spouses, the payment is capped at 50% of the combined income.

The word "net" is critical here. Net income means what you actually take home after federal and state taxes, Social Security, Medicare, and mandatory retirement contributions are removed. It does not include voluntary deductions like health insurance premiums or 401(k) contributions beyond what the law requires. If you are self-employed, net income is your profit after business expenses, not your total revenue.

Example: Spouse A earns $5,000 net per month. Spouse B earns $2,000 net per month. The calculation is (40% × $5,000) − (50% × $2,000) = $2,000 − $1,000 = $1,000 per month. The combined net income is $7,000, and 50% of that is $3,500, so $1,000 is well below the cap and that is the temporary support amount.

This formula applies to most divorces in California. It does not explore if one spouse earns more than $240,000 per month (this threshold changes yearly with inflation), in which case the judge has discretion to set support above or below what the formula produces. It also does not explore if both spouses have roughly equal incomes and custody arrangements are complex, though courts still often use it as a starting point.

The ten factors a judge uses for permanent alimony

Once the divorce is final, temporary support ends and permanent support (if any) takes its place. A judge does not use the formula anymore. Instead, California Family Code Section 4320 lists ten factors the court must consider. No single factor controls the outcome, and judges weigh them differently depending on the case.

The ten factors are: (1) the earning capacity of each spouse; (2) the extent to which a spouse reduced their earning power to support the family or care for children; (3) the ability of the paying spouse to pay; (4) the standard of living during the marriage; (5) the length of the marriage; (6) the age and health of each spouse; (7) the ability of the supported spouse to become self-supporting; (8) tax consequences; (9) the balance of hardships; and (10) any other circumstances the court deems relevant.

In practice, judges focus most heavily on income, length of marriage, and whether one spouse stepped out of the workforce. A spouse who left a career to raise children or support the other spouse's education often receives longer or higher support because their earning power is reduced. A short marriage (under ten years) usually results in lower support or support that ends sooner. A long marriage (over ten years) often results in support that continues for years or indefinitely.

How marriage length affects the duration of support

California law treats marriages of different lengths differently. For marriages lasting fewer than ten years, the court often sets an end date for support at half the length of the marriage. A five-year marriage might result in support lasting 2.5 years; a nine-year marriage might result in support lasting 4.5 years. This is not a hard rule — judges can extend support beyond the midpoint if they find good cause — but it is the default starting point.

For marriages of ten years or longer, there is no presumed end date. Support can continue indefinitely, or the judge can set a date based on the circumstances. A 20-year marriage where one spouse left the workforce to raise children might result in support lasting many years or until the supported spouse reaches retirement age. A 15-year marriage where both spouses worked throughout might result in support ending sooner.

The "length of marriage" is measured from the date of marriage to the date of separation, not the date the divorce is finalized. A couple married in 2010 and separated in 2020 has a ten-year marriage even if the divorce is not final until 2022.

What income counts and what does not

For both temporary and permanent support, the court looks at income from all sources. This includes wages, salary, bonuses, commissions, self-employment income, rental income, investment income, retirement distributions, and income from trusts. It also includes benefits like Social Security, disability payments, and workers' compensation if those are being received.

Income does not include the principal (the original amount) of an inheritance or settlement, only the income that principal generates. A lump-sum settlement payment is not income; the interest it earns is. Gifts are not income unless they are recurring and substantial enough to look like regular support from someone else.

For self-employed spouses, the court uses tax returns and business records to determine net income. If income has been artificially reduced — for example, a business owner suddenly taking a lower salary or inflating business expenses — the judge can add back income the court believes was diverted. This is common in contested divorces and requires documentation from both sides.

How the standard of living during marriage affects the amount

California law requires courts to consider the standard of living the couple maintained during the marriage. This does not mean the supported spouse gets to live exactly as they did before the divorce — that is rarely possible. It means the court looks at what the couple could afford and tries to keep the supported spouse's post-divorce standard of living reasonably close to it.

A couple that lived in a $2 million home, took annual vacations, and sent children to private school established a high standard of living. The court will not recreate that exactly, but it will consider it when setting support. A couple that lived modestly on one income will result in a lower support amount even if the paying spouse earns a high income, because the standard of living was lower.

This factor matters most in longer marriages where both spouses became accustomed to a certain lifestyle. In shorter marriages or where the couple lived frugally, it has less weight.

How to request a change to an alimony order

An alimony order is not permanent in the sense that it cannot be changed. Either spouse can request a modification if there is a significant change in circumstances. Common reasons include a substantial change in income (either spouse earning significantly more or less), a job loss, a serious health problem, or retirement.

To request a modification, you file a motion with the court that issued the original order. You must show that the change in circumstances is substantial and not temporary. A one-month reduction in income usually does not may have access to; a permanent job loss or a long-term reduction in hours does. The court will recalculate using the current income and circumstances, and may increase, decrease, or end support.

If you and your ex-spouse agree on a new amount, you can file a stipulation (a written agreement) with the court, and the judge will usually approve it without a hearing. If you disagree, the court will hold a hearing and decide.

Tax treatment of alimony in California

For divorces finalized after December 31, 2018, alimony is not deductible by the paying spouse and is not taxable income to the receiving spouse. This is different from older divorces, where the paying spouse could deduct alimony and the receiving spouse had to report it as income.

This change affects the amount of support because the paying spouse no longer gets a tax benefit. Some judges account for this by setting support slightly lower than they might have under the old rules. Others do not adjust. The tax treatment is one of the ten factors a judge may consider, but it is not required.

If your divorce was finalized before 2019 and you are still receiving or paying alimony under the old rules, the old tax treatment still applies unless you and your ex-spouse agree to change it.

Frequently Asked Questions

Can I get alimony if I earn more than my ex-spouse?

No. Alimony in California is paid by the higher earner to the lower earner. If you earn more, you would pay support, not receive it. The only exception is if you had a much higher earning capacity before the marriage and reduced it to support the family — for example, you left a medical career to raise children — but even then, the court would look at your current income first.

What happens to alimony if I remarry?

Alimony ends automatically if the receiving spouse remarries. It also ends if the receiving spouse enters into a domestic partnership. If the paying spouse remarries, alimony does not end, but the paying spouse can request a modification based on their new financial obligations, such as supporting a new spouse or stepchildren.

Does the length of the marriage matter more than income?

Both matter, but income usually has more when ready impact on the amount. Length of marriage affects how long support lasts and whether it can end at all. A high-income spouse in a short marriage might pay substantial temporary support but only for a few years. A moderate-income spouse in a long marriage might pay less per month but for many more years.

Can a judge order alimony if both spouses have similar incomes?

Yes, if one spouse has reduced earning power due to the marriage. A spouse who left the workforce to raise children or support the other spouse's education may receive support even if current incomes are close, because the court looks at earning capacity, not just current income. The amount would typically be lower than in a case with a large income gap.

What if my ex-spouse is hiding income?

You can request the court compel your ex-spouse to produce tax returns, bank statements, business records, and other financial documents. If the court finds that income has been hidden or artificially reduced, it can add back income and order support based on what the court believes the true income is. This requires evidence and usually an accountant or financial informed to testify.