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Last Modified on Nov 15, 2026
California spousal support hub / Amount and income
By H. William Edgar, California family law attorney at Edgar & Dow.
Bonuses, commissions, stock compensation, and fluctuating business income can affect California spousal support. The difficulty is choosing a method that reflects real earning ability without treating an exceptional year as permanent or ignoring compensation that is regularly available.
Depending on the facts, an order may use a representative income average, a fixed base payment plus a percentage of defined additional income, or another supported approach. The legal framework, financial evidence, and drafting all matter. A vague direction to pay “a share of bonuses” often postpones the dispute instead of resolving it.
Separate the income questions before selecting a method
Identify the source, timing, and conditions of each form of compensation. Base salary, discretionary bonuses, sales commissions, deferred compensation, stock options, restricted stock, business distributions, and severance do not necessarily behave alike. Determine what has been received, what is expected, and what remains contingent.
Then identify the support decision. Temporary support under Family Code section 3600 concerns necessary support during the case. Long-term support requires the section 4320 analysis, including ability to pay, needs, assets, tax consequences, and the marital standard of living.
For an existing order, read its language before applying a new income category. Whether a payment falls within an agreed percentage provision may turn on the definition the parties actually used. A compensation label chosen by an employer does not necessarily answer the legal question.
A representative history is more useful than the best or worst year
In In re Marriage of Pletcher (2021) 68 Cal.App.5th 906, the Court of Appeal addressed temporary support based on an unusually high earnings year despite substantial volatility. It discussed examining additional years or using an additional percentage component to better account for uncertain bonuses.
The lesson is not that every case requires a fixed number of years of averaging. The selected period should make sense for the income being assessed. A business that changed ownership, a new compensation plan, or a documented reduction in available work may make older earnings less predictive.
Prepare a history that identifies unusual events. Explain why a payment was exceptional, whether it represented several years of work, and whether similar compensation remains available. A chart can organize the evidence, but the underlying payroll, tax, and business records should support it.
What is an Ostler-Smith order?
The term commonly describes base support plus additional support tied to a percentage of specified variable income. In re Marriage of Ostler & Smith (1990) 223 Cal.App.3d 33 upheld an additional-support provision based on future bonuses in the circumstances presented there.
This structure can reduce the need to forecast uncertain compensation. The base amount addresses the dependable portion of income; the additional obligation arises when the defined income is received. It is an available approach, not a mandatory formula or a universal percentage.
The order must still fit the case. For long-term spousal support, the court cannot avoid section 4320 merely by expressing part of the award as a percentage. The financial result and the parties’ circumstances remain relevant.
Define the base before adding a percentage
Determine which compensation has already been included in the base support calculation. If an annual bonus was averaged into monthly income and a percentage is then charged on that same bonus without adjustment, the structure may count the same compensation twice.
Some provisions apply only to income above a stated threshold. Others distinguish base salary from specified additional compensation. Whatever method is selected, the order should explain the threshold, period, and relationship between the fixed and variable components.
For illustration only, assume an agreement provides $2,500 monthly support and 12% of a defined annual bonus above $10,000. A $40,000 qualifying bonus would produce $3,600 in additional support under that assumed language. If the parties instead intended 12% of the entire bonus once the threshold was crossed, the result would differ. Precise drafting resolves that distinction before payment is due.
Specify what compensation the provision covers
Avoid relying on “bonus” as a catch-all term. Identify whether the provision includes commissions, signing or retention payments, performance awards, deferred compensation, equity-related income, or other categories relevant to the employee’s actual plan.
Review the employment documents. A payment can be earned in one period, vested in another, and received later. The order should identify the event that triggers reporting and payment. It should also address what happens if the employer changes the name or structure of compensation.
Severance deserves separate attention because it may replace future wages rather than function as an ordinary bonus. The existing language and purpose of the order matter. Do not simply apply the bonus percentage to every large deposit without analyzing what the payment represents.
Gross, net, and tax adjustments must be explained
If the percentage applies to gross additional income, say so. If it applies after specified taxes or expenses, describe the calculation. “Net bonus” is uncertain if the amount depends on discretionary withholding, retirement elections, or deductions unrelated to the additional compensation.
The tax treatment of support itself also matters. Federal and California rules depend on the governing instrument and any qualifying modification. The Franchise Tax Board’s guidance explains California’s transition beginning in 2026. A proposed percentage should not be evaluated using an assumed deduction that the payer will not actually receive.
Consider whether a later reconciliation is needed and how it will work. Identify the records, deadline, and method for resolving a disputed adjustment. A provision that requires an annual true-up without specifying its basis can create recurring conflict.
Business owners require attention to expenses and control
Gross business receipts are not automatically money available for personal support. Reasonable operating expenses must be examined. At the same time, a business owner may control compensation, distributions, retained earnings, or personal expenses paid through the business.
A percentage provision should identify the financial measure used and the records needed to verify it. Depending on the business, that may involve returns, financial statements, payroll records, distribution records, and explanations of significant expenses. The appropriate scope should match the actual dispute.
Neither side should assume that a tax label settles the support question. A business loss may require analysis of whether it is recurring and relevant to available resources. A retained balance may require analysis of whether it is reasonably needed for operations. Our gross-versus-net income guide addresses the broader financial distinctions.
Equity compensation can implicate both property and support
Stock options and other equity awards may have a property component and an income component. The timing of the award, vesting, exercise, sale, and the work it compensates can matter. The support analysis should be coordinated with the property division rather than conducted from a single tax document in isolation.
In In re Marriage of Kerr (1999) 77 Cal.App.4th 87, the court addressed support tied to stock-option income and the need for a limit in the exceptional circumstances involving substantial appreciation. The case illustrates that an uncapped percentage can require scrutiny when it produces support far beyond the findings supporting the award.
Do not turn that decision into a universal rule for every equity award. The important work is identifying the compensation, the existing property treatment, the financial result, and the applicable support factors. Specialized accounting assistance may be useful where the transactions are substantial or complicated.
Build reporting and payment terms into the order
A workable provision should identify when records must be exchanged, when additional support is due, and what documents establish the calculation. It should address how the parties will notify each other of a compensation-plan change and how disputes will be presented.
Keep a payment ledger showing the compensation event, calculation, due date, payment, and any agreed adjustment. That protects both sides. The recipient can verify compliance, and the payer can demonstrate payment without reconstructing several years of records later.
If the order is ambiguous, seek advice before unilaterally expanding or narrowing its meaning. If circumstances have changed, a modification request may be necessary. Informal assumptions do not reliably amend an enforceable order.
Test the provision before signing it
Run examples using no additional compensation, a typical year, an unusually high year, and a change in compensation form. Ask whether the result matches the intended bargain and whether both parties can calculate it from available records.
The best structure is one that fits the evidence and remains understandable when income changes. A carefully chosen percentage can help. A percentage without definitions, reporting obligations, and a clear relationship to base support can create a new dispute every year.
Discuss your spousal support case with Edgar & Dow
A useful consultation starts with the existing orders, current financial records, and the decision that needs to be made. Edgar & Dow represents clients in California family law matters. Contact our office or call 951-684-6885 to discuss your situation.
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