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Last Updated: September 30, 2026
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If you’re going through a divorce or separation and there are children involved, child support is going to be part of your financial reality for a long time, potentially until your youngest kid finishes high school. California has a formula that’s supposed to make everything objective and straightforward, but the formula only produces accurate results when accurate numbers go into it. The other parent’s actual income, the real custody arrangement, legitimate deductions versus manufactured ones, all of these determine what the calculation spits out, and there’s plenty of opportunity for someone to game the system if nobody is paying close attention. Getting this wrong at the outset means living with numbers that don’t reflect reality, month after month, for years.
A San Jose, CA child support lawyer can help you make sure the calculation in your case reflects what’s actually happening rather than what the other side finds convenient to claim. Schank Family Law has handled support disputes throughout California for more than twenty years, representing parents who need adequate support to cover what raising children actually costs and parents who are defending against demands built on inflated income figures or manipulated custody percentages. In a place like San Jose, where tech compensation often includes stock options, bonuses, and equity grants that don’t show up neatly on pay stubs, getting support calculations right requires attorneys who know how to dig into complex income situations.
Reach out for a free consultation about what you’re dealing with.
Child support disputes ultimately come down to whose income figures the court accepts and whether the custody percentages being used actually match reality. Christian Schank founded this firm more than twenty years ago, and throughout that time he has represented parents across the full range of support cases, people who needed money to cover real expenses for their children and people who were being asked to pay amounts that had no relationship to what the law actually required.
Christian earned his law degree from University of La Verne College of Law and has maintained active membership with the California State Bar since 2003. He holds an AV rating from Martindale along with Lead Counsel Verified status for family law, credentials reflecting how his work has been viewed by judges and peers over a long career. His support cases have included situations involving tech executives with compensation packages that required forensic analysis to understand, self-employed parents accused of hiding income in their businesses, parents who quit jobs specifically to reduce their support obligations, and enforcement actions against people who simply stopped paying what they owed.
What Christian has learned over two decades is that the guideline formula creates an illusion of mathematical precision. Run the numbers, get your answer. But if someone is lying about income, hiding bonuses, exaggerating deductions, or misrepresenting custody time, the formula just produces a wrong answer dressed up as objectivity. Having a family lawyer in San Jose, CA who knows how to investigate financial situations, challenge inconsistent numbers, and present evidence establishing what should actually go into the calculation, that’s what determines whether the outcome is fair or whether someone gets away with gaming the system.
We don’t charge for initial consultations because figuring out where you stand shouldn’t require paying money before you’ve even explained your situation.
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I hired Law Offices of Christian Schank and Associates to help with my child support case. My lawyer offered excellent service, very professional and paid close attention to all my questions and concerns. He was truly dedicated to getting the best outcome, and for that I am extremely grateful to have found them.” — Jon Wood
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Support disputes show up in different contexts such as divorce proceedings, paternity cases establishing rights for unmarried parents, and modification battles years after original orders were entered when circumstances have changed. Our San Jose child support attorneys work across all of them.
Unlike spousal support, where judges have broad discretion to weigh various factors, child support in California follows a mandatory guideline. The formula produces a specific dollar amount that courts are required to order unless unusual circumstances justify deviation. That makes getting the input numbers right absolutely critical.
The actual formula lives in Family Code Section 4055. It takes each parent’s net monthly disposable income and the percentage of custody time each parent has, runs them through an algebraic calculation, and spits out a monthly support figure. More income means more support. More time with the paying parent means less support. The math itself isn’t complicated once you have accurate numbers.
Net disposable income starts with gross income from all sources. Family Code Section 4059 casts a wide net—wages, bonuses, commissions, self-employment earnings, rental income, dividends, interest, pension payments, Social Security benefits, unemployment benefits, and essentially anything else that constitutes recurring money. Courts define income broadly.
Hardship deductions can reduce the numbers in certain situations. Under Family Code Section 4071, extraordinary medical expenses, catastrophic losses, and minimum living expenses for children from other relationships can factor in. But these deductions require specific requests and supporting documentation.
Add-on expenses go beyond basic guideline support. Family Code Section 4062 distinguishes mandatory add-ons, childcare enabling work and uninsured healthcare costs from discretionary ones like private school, travel for visitation, and extracurricular activities.
The California Courts publish online calculators, but those calculators assume accurate information is being entered. When someone has irregular income, runs a business, or has tech compensation that includes equity and bonuses, determining what numbers should actually go in requires analysis that goes beyond a simple website.
Either parent can seek modification when circumstances materially change. Family Code Section 3651 allows for adjustments based on changed income, different custody arrangements, or other significant developments. The parent requesting modification carries the burden of proving circumstances changed enough to warrant a new order.
Support typically continues until children turn 18, or 19 if they’re still finishing high school while living with a parent. Under Family Code Section 3901, parents can agree to support children through college, but courts cannot order it without that agreement.
Support outcomes depend on the particular numbers involved in your situation. Here’s what California law makes available through the Santa Clara County family court system.
Monthly guideline support. The formula produces a presumptively correct amount that becomes the baseline. For receiving parents, this means predictable income helping cover housing, food, healthcare, clothing, and the dozens of other costs involved in raising children. For paying parents, guideline calculations provide certainty based on actual numbers.
Add-on expense contributions. Courts can order contributions beyond monthly support for specific costs. Family Code Section 4062 requires contributions toward childcare enabling employment and uninsured medical expenses. Courts can also order discretionary add-ons for educational costs, extracurricular activities, and visitation travel.
Retroactive payments. Support obligations typically run from filing date rather than whenever the hearing occurs. If months pass between your filing and your court date, retroactive support covers that gap, potentially adding up to significant money depending on income levels and delay length.
Modifications when circumstances change. Material changes justify support adjustments in either direction. Job loss, disability, or substantial income decreases can support requests to lower payments. Increased earnings, reduced custody time, or evidence of hidden income can support requests to raise support.
Enforcement remedies. California takes non-payment seriously. Wage assignments under Family Code Section 5230 automatically deduct support before the paying parent sees the money. The California Department of Child Support Services can intercept tax refunds, suspend licenses, deny passports, and pursue other collection mechanisms. Contempt proceedings can result in fines or incarceration.
Interest on unpaid amounts. Unpaid support accrues 10% annual interest under California law. This adds up over time and gives paying parents strong incentive to stay current rather than letting arrears build.
Attorney fee contributions. Family Code Section 2030 lets courts order one parent to help pay the other’s legal fees when a significant income gap would otherwise leave the lower-earning parent without real representation.
Support doesn’t exist in isolation from other family law issues. Custody time directly affects the calculation, more parenting time typically means adjusted support obligations. Spousal support paid reduces income for child support purposes. Property division affects what assets each party has going forward. Understanding how everything connects helps you make smarter decisions about your overall situation.
Gathering the right documentation before you file, tax returns, pay stubs, bank statements, equity grant records, business financials if relevant, puts you in a stronger position when calculations happen. Taking time to prepare financially pays off.
Whether you need support to cover what raising your children actually costs or you’re defending against calculations built on numbers that don’t match reality, having representation that understands how these cases work matters. We offer free consultations where we can look at your situation, explain how the guideline applies to your facts, and talk through what approaches might make sense.
We handle child support cases throughout Santa Clara County, initial orders during divorce or paternity proceedings, modifications when life circumstances shift, and enforcement when the other side stops paying. These numbers affect your finances every month for years. They deserve serious attention.
Give us a call when you’re ready to figure out what comes next.
1. Gather your last three years of W-2s, 1099s, and tax returns. Courts need a complete income picture, and in Santa Clara County where compensation fluctuates with bonuses and stock vests, multiple years of data matter more than a single pay stub.
2. Obtain your most recent pay stubs showing year-to-date earnings. Include documentation of any RSU vests, ESPP purchases, commission payments, or bonus distributions received in the current year.
3. Pull statements for all bank, investment, and retirement accounts. These establish the full financial picture and can reveal income sources beyond base salary that affect the support calculation.
4. Calculate your actual monthly expenses. Complete an Income and Expense Declaration (FL-150) accurately. Courts use this form to assess both parents’ financial situations, and inconsistencies between claimed expenses and documented spending undermine credibility.
5. Document your current custody timeshare percentage. The number of overnights each parent has directly affects the child support calculation. Even a small change in timeshare can shift the support amount by hundreds of dollars per month.
6. Identify all sources of the other parent’s income. If your co-parent receives bonuses, rental income, dividends, or other compensation beyond a base salary, that income counts in the formula. Gather whatever evidence you can access.
7. Note any add-on expenses for the children. Childcare costs, uninsured medical expenses, educational needs, and travel expenses for visitation are handled separately from the guideline calculation and can be divided between parents.
8. Determine whether either parent pays for health insurance. The cost of adding children to a parent’s employer health plan is factored into the support calculation as a deduction from that parent’s income.
9. Check whether a previous support order exists. If there is an existing order from a prior case, you need to know the current amount and whether arrearages have accumulated before seeking a new or modified order.
10. Consult with a child support attorney before agreeing to any amount. The guideline formula is complex, and the inputs used to run it determine the output. Getting the income and timeshare numbers right at the beginning prevents costly corrections later.
Child support calculations in Santa Clara County reflect an income environment unlike most of California. The U.S. Census Bureau reports median household income in San Jose above $130,000. But that median masks significant variation. A software engineer at a major tech company might earn $250,000 in total compensation while their co-parent earns $50,000 as a school administrator, and those numbers produce a very different support calculation than two parents earning similar salaries.
The guideline formula under Family Code Section 4055 uses each parent’s net disposable income and the percentage of time each parent has physical custody. In a county where base salaries routinely exceed $150,000 and total compensation packages include RSUs worth $50,000 to $200,000 per year, the support numbers can be substantial. Monthly guideline amounts of $3,000, $5,000, or more are not uncommon in contested cases here.
Stock-based compensation creates particular challenges. RSU vests that arrive quarterly in varying amounts make “income” a moving target. Courts must decide how to treat a $40,000 vest in one quarter followed by a $15,000 vest the next. Averaging, annualizing, and prospective approaches each produce different results, and the method chosen can swing the support order by thousands of dollars annually.
According to Judicial Council data, family law filings including child support matters represent one of the highest-volume case categories in Santa Clara County Superior Court. The Office of Child Support Enforcement reports that California’s child support program serves millions of families statewide, and Santa Clara County’s high-income caseload creates unique analytical demands compared to counties with more straightforward earning patterns.
The cost of living further complicates these cases. A support order that seems generous in raw dollar terms may not cover childcare costs that run $2,000 to $3,000 per month in San Jose, or the housing premium required to maintain a home with bedrooms for the children in a neighborhood where the family lived during the marriage.
California uses a guideline formula that considers both parents’ net disposable income and the percentage of custodial time each parent has. The calculation runs through software called DissoMaster or XSpouse, and the result is presumptively correct.
Under Family Code Section 4058, income includes wages, salary, commissions, bonuses, RSU vests, rental income, dividends, partnership distributions, Social Security benefits, and most other sources of recurring revenue.
Yes. Either parent can request a modification by showing a material change in circumstances. Common grounds include job loss, significant income changes, changes in custody timeshare, and new childcare expenses.
Significantly. The more overnight time a parent has, the lower their support obligation tends to be. The formula accounts for the additional expenses each parent incurs while the children are in their care.
California imposes a duty on both parents to disclose all income and assets through mandatory financial declarations. If you suspect hidden income, forensic accounting, subpoenas for employment records, and bank account analysis can uncover what the other parent is not reporting.
In limited circumstances. The guideline amount is presumptively correct under Family Code Section 4057. A judge can deviate if applying the formula would be unjust or inappropriate given specific circumstances, but deviations require written findings.
Costs beyond the basic guideline amount that courts can order parents to share. These typically include childcare necessary for employment or education, uninsured healthcare costs, educational expenses, and travel costs for visitation.
You can pursue enforcement through wage garnishment, bank levies, contempt proceedings, tax refund intercepts, and driver’s license suspension. The DCSS can also assist with enforcement for registered cases.
Vested stock compensation is income for support purposes. The treatment of unvested grants is more complex because they overlap with property division. Courts must determine what portion constitutes income versus a property interest.
Not automatically. Guideline support covers basic needs. Private school tuition, tutoring, and extracurricular activities can be ordered as add-on expenses if the court finds them appropriate given the family’s circumstances and financial ability.
Yes, if there is an income disparity. Even with equal timeshare, the higher-earning parent typically pays some support to the lower-earning parent. The formula accounts for both income and time.
Generally until the child turns 18, or 19 if still in high school full-time. Support can also end if the child marries, is emancipated, or enters active military duty.
Job loss constitutes a change in circumstances that may justify a modification. However, the court will evaluate whether the job loss was voluntary, whether you are making reasonable efforts to find new employment, and your earning capacity based on education and experience.
The Santa Clara County Department of Child Support Services can establish, modify, and enforce child support orders. However, DCSS represents the government’s interest in ensuring children receive support, not either parent individually. Having your own attorney provides advocacy focused specifically on your interests.
Fees depend on case complexity. Straightforward guideline calculations cost less than cases involving self-employment income analysis, hidden assets, or above-guideline arguments. Schank Family Law uses a retainer structure with hourly billing.
Child support cases in Santa Clara County begin when one parent files a request for an order, either as part of a divorce or as a standalone parentage action. Both parents submit Income and Expense Declarations, and the court schedules a hearing.
At the hearing, the judge reviews the income documentation and runs the guideline calculation. If the inputs are not disputed, the process can move relatively quickly. Contested cases where one parent challenges the other’s reported income, disputes the timeshare percentage, or argues for deviation from the guideline take longer and may require additional discovery, forensic analysis, or mediation.
Several factors influence outcomes in this county: the accuracy of income reporting, how stock compensation gets characterized and averaged, the custody timeshare arrangement, each parent’s actual versus claimed expenses, and whether either parent has voluntarily reduced income. Cases involving self-employed parents or business owners add complexity because the court must determine actual income available for support versus legitimate business expenses.
Several agencies in Santa Clara County handle matters that intersect with child support proceedings.
Schank Family Law is not affiliated with and does not endorse any of the organizations listed above. This information is provided for reference purposes only.
111 N Market St #1020
San Jose, CA 95113
Posted on GoogleLeann C
Highly recommend. Amazing and supportive during a challenging divorce. They understand woman’s rights. The team explains the steps being taken. They know how to handle a spouse that is uncooperative.Posted on GoogleRaime G
Mr.Schank did a wonderful job for our case, I can’t thank him enough! The entire team is so helpful, professional and friendly! I highly recommend their services! Thanks again! 🙌🏼Posted on GoogleRobert M
I cannot thank Schank Family Law and my attorney, Vanessa Estrada, enough for everything they did for me and my daughter. After a long and difficult custody battle, we achieved a successful outcome, and I truly believe Vanessa’s dedication, knowledge, and hard work played a major role in that victory. From day one, Vanessa genuinely cared about my case. She took the time to understand every detail, remembered every situation, and always made me feel like my case mattered. Her professionalism, preparation, and knowledge of family law gave me confidence throughout one of the most stressful times of my life. What impressed me most was how hard she fought. She never gave up, stayed focused on what was in my child’s best interest, and stood by me every step of the way. Whenever I had questions or concerns, she was responsive, honest, and always prepared. If you’re looking for an attorney who truly cares about her clients, is extremely knowledgeable, and will fight for you until the very end, I highly recommend Vanessa Estrada and Schank Family Law. Thank you, Vanessa, for helping me secure a better future for my daughter and for being such a strong advocate during this journey. I will always be grateful. ❤️Posted on GoogleAsh M
I had a awesome phone call with Clarisa she settled me made me feel a lot better took the time to hear me out.. extremely happy I made the appointment with her..Posted on GoogleVivian S
I’m so grateful for Shank Family Law. Christian Schank and Derek Austin helped me so much during an extremely stressful time, and I truly felt like I could fully rely on their knowledge and expertise. Brian in the office was also always so kind and lovely to speak with. Their whole team made me feel supported and taken care of, and honestly helped me sleep better at night knowing I was in good hands. I would never go with anyone else.Posted on GoogleCollin w
Shank Family Law was absolutely amazing. Everyone from the attorneys to the staff and secretary was compassionate, professional, and incredibly knowledgeable. They provided so much guidance and support throughout the entire process and truly made me feel cared for during a difficult time. I honestly could not imagine choosing anyone else. I’m beyond grateful for their help and highly recommend them.Posted on GoogleCooper C
Helped me so muchPosted on GoogleBeverly A
Great Family Lawyers! They really care about their clients and have great communication. I would recommend!Posted on GoogleLuke H
Working with Christian Schank was one of the best decisions I could have made during a really difficult time. They are truly the best in the state. Incredibly knowledgeable, always responsive, and they went above and beyond to protect my interests. I felt supported and confident every step of the way, and everything was handled with professionalism and care. I could not recommend them more highly.Posted on GoogleRuff F
Great firm, they are legit in family law cases
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Attorney Christian L. Schank founded Schank Family Law in 2003. With eight offices and a Certified Family Law Specialist on staff, the firm handles divorce, custody, support, and property matters in courts across the state.
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