Sole Proprietor - Late Deferral Contributions

[Guest revier]

I need some help before I speak with this client.

If a sole proprietor forgot to deposit his deferrals until November and filed his tax return in April can he still take the deduction for the deferrals or does he have to amend his tax return.

Any insight would be appreciated.

[austin3515]

No deduction.

404(a) applies, which requires that the deposits be made before the filing deadline, or extensions thereof.