The CP134 notifies you that an overpayment on your employer tax account (Forms 941, 940, 943, 944, or 945) has been applied to another tax period or another account. This typically happens when you overpaid employment taxes in one quarter and the IRS applied the excess to a balance due in another quarter.
Why Overpayments Occur
Employment tax overpayments happen when you made excess tax deposits, when you filed an adjusted return (Form 941-X) showing lower tax than originally reported, when credits (like the Employee Retention Credit) created an overpayment, or when the IRS corrected your return and the correction reduced your liability.
Verify the Application
Review the CP134 to confirm the overpayment was applied to the correct period. If the IRS applied it to a quarter you believe is already paid, contact them with your deposit records. If the overpayment should have been refunded instead of applied, file Form 941-X or contact the IRS to request a refund of the excess.
CP134B Variant
The CP134B is a related notice showing adjustments to your employer account that resulted in an overpayment or a change in the applied amount. Review both notices against your payroll records and tax deposit history.
If the overpayment application doesn't look right, call us at (813) 229-7100.