What Is the Difference Between SIPC Coverage Per Account and Per Customer?
Someone with an individual brokerage account, a retirement account, and a joint account, all at the very same firm, might assume they only get one layer of coverage — but the way SIPC actually counts accounts is more specific than that.
The short answer
SIPC coverage applies per separate capacity in which an account is held, not simply per person or per account number, which means a customer can end up with more total protection across multiple accounts at the same brokerage if those accounts are genuinely held in different capacities. An individual account, a joint account, and a retirement account are generally treated as separate categories for coverage purposes, even when the same person’s name appears on each one. Multiple accounts held in the exact same capacity, on the other hand, are typically combined and treated as a single account for coverage purposes.
What counts as a separate capacity
A “capacity” in this context refers to the legal way an account is titled and owned — individually, jointly with another person, in trust, through a retirement account, or as a custodian for someone else, among other categories. SIPC’s rules generally treat each of these categories independently, so coverage limits apply separately to each capacity rather than being pooled together into one combined figure for a given customer.
Why a joint account stands apart
A joint brokerage account is treated as its own separate category, distinct from either owner’s individual account at the same firm. This means a couple with a joint account, and each also holding a separate individual account, could in principle have coverage that applies independently across all three, rather than one combined limit shared across everything.
Retirement accounts form their own category too
An IRA or similar retirement account generally counts as yet another distinct capacity, separate from an individual’s regular taxable brokerage account, even at the identical firm. This separation reflects the different legal ownership structure of a retirement account rather than any special retirement-specific coverage rule.
Custodial accounts follow the same logic
The same capacity-based approach extends to other structures, including a custodial investment account held for a child, which is treated as its own category separate from the custodian’s personal accounts, since the child is the actual beneficial owner of the assets even though an adult manages it.
Where this intersects with other coverage
None of this changes if a firm also carries privately purchased excess coverage — that additional layer generally follows the same per-capacity structure as the base SIPC coverage, just extended to a higher amount within each category.
A common point of confusion
It’s easy to assume that opening several individual accounts at the same firm, purely for the sake of spreading out coverage, would multiply protection the way holding accounts across different capacities does. That generally isn’t the case — multiple accounts held in the identical capacity, such as two individual taxable accounts at the same brokerage, are typically aggregated together and treated as one for coverage purposes rather than counted separately. The distinction that actually creates additional coverage is the legal capacity itself, not simply the number of account statements a person receives.
What to weigh
Anyone with several accounts at one brokerage has reason to understand how those accounts are actually titled, since the capacity distinction — not simply having more accounts — is what determines whether coverage is genuinely separate or effectively combined.