Child Support Lawyers Protecting
Your Children's Financial Future
At Haslam Perri Law Firm, we ensure that child support calculations are fair, accurate, and fully protect your children’s financial interests — using forensic accountants and financial experts when necessary across San Bernardino and Riverside Counties.
Child Support — San Bernardino County
Accurate Child Support Calculations That Protect Your Children
Haslam Perri Law Firm is recognized as one of the prominent California family law firms serving communities throughout San Bernardino County and Riverside County. Our board-certified attorneys receive many calls from clients asking about child support obligations — and we have the experience to ensure every calculation is fair, accurate, and fully protects your children.
Under California law, minimum child support obligations are regulated by the Dissomaster formula — a calculation that takes a variety of financial factors into account, including the income of both parents. The financial data entered into this formula must be fair and accurate. Our attorneys protect your rights and ensure the final calculation is based on correct income valuation.
We have extensive experience using the professional services of forensic accountants, financial experts, and asset valuation professionals to protect your financial interests — especially when income is hidden, understated, or complex.
- ✓Board-certified family law specialists since 2003
- ✓Forensic accountants and financial experts engaged when needed
- ✓Serving San Bernardino County and Riverside County
- ✓All divorce and post-divorce child support matters handled
- ✓Mediation, collaborative, and litigation options available
Cases We Handle
- ✓Mediation and collaborative support agreements
- ✓Temporary and additional child support
- ✓High-asset divorce child support
- ✓Move away and relocation cases
- ✓Domestic partnership child support
The Dissomaster Formula
How California Calculates Child Support
California uses the Dissomaster software program to calculate guideline child support. Understanding the factors that go into this formula — and how to ensure they are applied fairly — is where an experienced attorney makes all the difference.
Child Support Services
All Child Support Matters — Handled by Board-Certified Specialists
From initial calculation through enforcement and modification — our board-certified attorneys handle every aspect of child support law in San Bernardino County and Riverside County.
Custody and Child Support Connection
Your Custody Agreement Directly Affects Child Support
In addition to financial data, the California Dissomaster formula also takes into account the amount of time each parent spends with the children. A parent who has more custodial time generally pays less child support — making your custody agreement a crucial component of a fair overall settlement.
Getting the right child custody and visitation agreement is not just about your relationship with your children — it also has a direct financial impact. Our attorneys handle both custody and support issues together, ensuring every aspect of your agreement is fair, accurate, and legally sound.
We handle all matters relating to child support — from the initial calculation through post-judgment modifications and enforcement — ensuring your children receive the financial support they deserve at every stage.
Client Testimonials
What Our Child Support Clients Say
"My ex was hiding income to reduce child support. Haslam Perri brought in a forensic accountant who uncovered everything. My children now receive the full support they deserve."
"When I lost my job I needed to modify my support order quickly. Donald Haslam handled everything efficiently and got a fair reduction approved. Professional and responsive throughout."
"Haslam Perri made sure the Dissomaster calculation included all of my ex's income sources. The final support order was significantly higher than what he proposed. Worth every penny."
Frequently Asked Questions
Child Support Questions Answered
Clear answers to the most common child support questions in San Bernardino County. Call us for advice specific to your situation.
California uses the Dissomaster formula to calculate child support. The formula considers both parents’ gross monthly income, the percentage of time each parent spends with the child, tax filing status, mandatory payroll deductions, health insurance costs, and other allowable expenses. The result is a guideline support amount that courts are required to follow in most cases. At Haslam Perri Law Firm, our attorneys ensure the formula is applied accurately and that all income is properly reported.
California child support calculations include wages and salaries, self-employment income, rental income, investment returns, bonuses, commissions, overtime pay, military pay and allowances, disability payments, and unemployment benefits. Our attorneys work with forensic accountants and financial experts to ensure all income sources are properly identified and accurately valued — especially in high-asset cases where income may be hidden or underreported.
Yes. Either parent can petition the court to modify child support if there has been a significant change in circumstances — such as a change in income, a job loss, a change in the child’s needs, or a change in the custody arrangement. Modifications are not automatic and require a formal court order. Our attorneys handle post-judgment child support modifications throughout San Bernardino County and Riverside County.
The amount of time each parent spends with the child is a critical factor in California’s child support formula. A parent with more custodial time generally pays less support. Getting the right child custody and visitation agreement is a crucial component of a fair child support settlement. Our attorneys handle both custody and support issues together to ensure your overall agreement is fair and balanced.
California has strong enforcement mechanisms for unpaid child support. Remedies include wage garnishment, bank account levies, tax refund intercepts, suspension of driver’s and professional licenses, passport denial, and contempt of court proceedings. Our attorneys act quickly and aggressively to enforce your child support order when payments are not made.
Yes. Parents can negotiate child support agreements through mediation or collaborative law. However, any agreement must be reviewed by the court and approved as a formal order to be legally enforceable. Our attorneys at Haslam Perri Law Firm handle mediated and collaborative child support agreements throughout San Bernardino County — ensuring every agreement protects your child’s financial interests and complies with California law.
Discuss Your Child Support Concerns — Free Consultation
Contact us to discuss the circumstances of your divorce, child custody, and child support concerns. Our board-certified specialists are ready to protect your children’s financial future.

