The Taxpayer Advocate Service has developed several tools for individuals and employers to assist in estimating their ACA related credits and payments. Because these tools provide only an estimate, you should not rely upon them as an accurate calculation of the information you will report on your tax return. You should use these estimators only as a guide to assist you in making decisions regarding your tax situation.

The Premium Tax Credit Change Estimator can help you estimate how your premium tax credit will change if your income or family size changes during the year. This estimator tool does not report changes in circumstances to your Marketplace. To report changes and to adjust the amount of your advance payments of the premium tax credit you must contact your Health Insurance Marketplace. Be sure to report all changes directly to that Marketplace because they can affect both your coverage and your final credit when you file your federal tax return.

The Individual Shared Responsibility Payment Estimator can help you estimate the amount you may have to pay if you did not have minimum essential coverage during the year. This tool can only provide an estimate of your individual shared responsibility payment. To determine the payment when you file your tax return, use the Shared Responsibility Payment Worksheet in the instructions for Form 8965.

The Small Business Health Care Tax Credit Estimator can help you determine if you might be eligible for the Small Business Health Care Tax Credit and how much credit you might receive. This tool provides you with an estimate for tax year 2014 and beyond. However, some figures used in determining the credit are indexed for inflation. Because of this, for future years, the estimator cannot provide a detailed estimate.

By clicking on these links, you will enter the Taxpayer Advocate Service website. The Taxpayer Advocate Service created, operates, and maintains this website and is solely responsible for the content.

The calculations provided by the TAS Estimator Tools are only estimates and may not match the actual credits or payments you will report on your tax return. IRS cannot validate the accuracy of the estimator calculations for your specific circumstance.

TAS is an independent organization within the IRS whose job is to ensure every taxpayer is treated fairly and that taxpayers know and understand their rights.

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Upcoming Tax Dates

October 9 — Everyone
Federal Holiday (Columbus Day) - Details

October 11 — Employees who work for tips
If you received $20 or more in tips during September, report them to your employer - Details

October 15 — Individuals
If you have an automatic 6-month extension to file your income tax return for 2017, file Form 1040, 1040A, or 1040EZ and pay any tax, interest, and penalties due - Details

October 15 — Corporations
File a 2017 calendar year income tax return (Form 1120) and pay any tax, interest, and penalties due. This due date applies only if you timely requested an automatic 6-month extension Details

October 15 — Partnerships
Electing large partnerships: File a 2017 calendar year return (Form 1065-B). This due date applies only if you were given an additional 6-month extension - Details

October 15 — Social security, Medicare, and withheld income tax
If the monthly deposit rule applies, deposit the tax for payments in September.

October 31 — Certain small employers
Deposit any undeposited tax if your tax liability is $2,500 or more for 2017 but less than $2,500 for the third quarter.

October 31 — Federal unemployment tax
Deposit the tax owed through 09-if more than $500.

October 31 — Social security, Medicare, and withheld income tax.
File Form 941 for the third quarter of 2018. Deposit or pay any undeposited tax under the accuracy of deposit rules .If your tax liability is less than $2,500, you can pay it in full with a timely filed return. If you deposited the tax for the quarter timely, properly, and in full, you have until 11-10 to file the return.

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