Why is double counting occurring in 2025 on capital gains?

[rsaffi]

I checked my two brokerage accounts for box 3 amounts; only 1 mutual fund reported an amount of about $15,000 but my Schedule D reports $33,000 approx. What can I do to resolve this? It is inflating my total income and resulting in much additional tax.

[RobertB4444]

Did you have any 1099-B stock sales?  Those are combined with the capital gains distributions.

[SteamTrain]

@rsaffi 

Or did you mean box 2a $$ amounts......those are the normal Mutual Fund cap gains  (never had any 2b, 2c, or 2d $$)