Amended Individual Income Tax Amended Individual Income Tax Form D-400V Amended eServices Resources Payment Options Benefits Maintenance Schedule Videos Contact Information Pay amended individual income tax Pay amended individual income tax for the current tax year, and prior years through tax year 1998. What is amended individual income tax? If you filed your return and paid the tax due, but later found a mistake that changed the tax due, you need to file an amended return and make an amended tax payment. If you filed your return but haven’t paid the tax due, you need to make an original individual income tax payment. Are my submissions secure? The information you enter in the application is secure. However, some browsers may present a security error message because the header portion of the application references a legacy site that uses HTTP. Review How to Amend Your Return for more information.