Why Your Estimated Tax Payments May Not Match Your Joint Return?
By Josselyn P. EA May 23, 2026 This is general information regarding U.S. taxes based on current tax laws, 2026. It is important that you consult with your tax professional on your own personal tax situation. Got IRS Notice CP23? And you are married filing jointly and you made all your estimated payments during the year on time. It might be a simple payment mismatch. First verify that the IRS notice is legit. Check your IRS account, both the main taxpayer and spouse should first check their IRS account. An IRS Notice CP23 is a notice the IRS sends when there is a discrepancy between the estimated tax payments shown in the tax return filed and what they actually received. This is a common issue when estimated tax payments are made under the secondary taxpayer's SSN (the spouse listed on a joint return), the IRS may not automatically match them to the joint return. This is likely the reason why you received the CP23. The followings are other reasons why...