Individual Budget vs. Spending Plan: What's the Difference?

Families new to the Self-Determination Program (SDP) hear "budget" and "spending plan" used as if they were the same thing. They are not. The individual budget is the amount of money available for the year. The spending plan is the written plan for how that money will be used.

What the individual budget is

The individual budget is the total amount of regional center funding available to buy services under SDP for the plan year. It is set by the Individual Program Plan (IPP) team.

How the number is calculated, as of 2026:

• For someone already receiving regional center services, the budget starts from the purchase-of-service spending on that person over the most recent 12 months.
• For a new consumer with no spending history, the regional center builds a budget from the average cost of the services identified in the IPP.
• The budget cannot exceed what the same services would cost through the traditional regional center system.

Two more rules matter later in the year:

• The budget can be adjusted up or down when needs, circumstances or resources change. As of July 2025 the Department of Developmental Services (DDS) says this explicitly, and gives minimum-wage increases as an example.
• One-time purchases, such as a ramp, may be excluded from the next year's calculation so a single large item does not shape a future budget. See One-Time Purchases and Next Year's Budget.

The budget is a ceiling. It is not a payment. No money moves until there is an approved spending plan.

What the spending plan is

The spending plan describes how the budget will be used. For each service it lists:

• the service itself,
• how often it will be delivered,
• what it costs,
• which of the uniform budget categories it belongs in.

The plan is attached to the IPP. The total of everything on the plan cannot exceed the individual budget. The plan must name the provider type and the qualifications required, even if the actual person or agency has not been chosen yet.

The regional center reviews the spending plan before it takes effect. The review checks four things: the service is federally eligible under the SDP waiver, it is not available from a generic resource such as In-Home Supportive Services (IHSS) or the school district, the provider meets the qualifications, and the participant chose it. See What an SDP Budget Can and Cannot Pay For.

A short way to remember the difference

• Budget: how much. Set by the IPP team from spending history or average costs. Adjustable when circumstances change.
• Spending plan: how it is used. Written with the participant and the IPP team, reviewed by the regional center, attached to the IPP.

The budget can stay the same while the spending plan changes, for example when a family shifts hours from one service to another. The reverse is also true: a budget adjustment does not spend anything by itself until the plan is revised to use it. See Changing Your Spending Plan Mid-Year.

What is paid outside the budget

Some costs are real but do not come out of the individual budget. As of 2026, DDS lists these:

• FMS costs. The regional center has paid the Financial Management Service (FMS) directly since July 1, 2022. The FMS fee does not reduce the money available for services.
• Insurance co-pays and deductibles.
• Competitive Integrated Employment (CIE) incentive payments.
• Paid Internship Program payments.
• Rent, under Welfare and Institutions Code section 4689(i).
• SSI/SSP.
• Coordinated Family Supports.

Confirm with your regional center how any of these apply to your situation. Program rules change, and your regional center may have its own guidance.

Where the FMS fits

The FMS does not set the budget and does not approve the spending plan. Those are IPP team and regional center decisions. The FMS receives the approved plan, maps it to service codes and categories, pays providers from it, keeps funds sufficient through the year, and reports on it each month. If a request does not fit the plan, the FMS holds it and tells you who to talk to, usually the service coordinator. See What Is Our Role as FMS and How Do Spending Plans Work.

How Sentinel Four handles this

• A signed and approved spending plan must reach us by the 10th of the month before the intended start date. Regional center authorizations should be in place the week before the start date.
• During implementation, your dedicated case manager maps each line of the spending plan to a service code and to a budget category in the portal, so every later request has something to be checked against.
• The portal is available 24/7 and shows the budget as allocated, spent in the last 30 days, and remaining, which is the monthly report DDS requires. See Reading Your Budget in the Portal.
• Payroll and purchases cannot begin until both the signed spending plan and matching authorizations are in place.
• When the regional center approves a budget adjustment or a revised spending plan, send it to your case manager and we update the portal to match. We do not change a budget or a plan on our own.