Use the average of a number of paychecks as your gross pay for the Tax Withholding Estimator. You may also want to use the Tax Withholding Estimator occasionally to re-estimate your taxes if your paychecks change significantly.

Because the Tax Withholding Estimator predicts your future withholding, your past decisions about allowances shouldn't affect its accuracy. To keep your records very clear as you make changes to your paycheck, be sure to set up your paychecks as recurring deposits, and then track your gross pay and itemize the taxes.

You can update your tax withholding information at any time and have the Tax Withholding Estimator recalculate your data.

Before you use the Tax Withholding Estimator, you need to complete the Tax Estimator. You can then use the Tax Withholding Estimator to determine your tax allowances.

You may have invalid or missing information. If you didn't enter any income or set your target refund (or payment) as a larger amount than is possible with the information entered, Money displays an error message. Review your information in the Tax Withholding Estimator, enter any missing data, and then have the Tax Withholding Estimator recalculate your data.

The Tax Withholding Estimator information comes from the Tax Estimator. If you don't change the default values in the Tax Estimator, you can verify your tax-related transactions in the Tax Line Manager.

If you've changed data in the Tax Estimator by entering an amount in a tax line as additional income or spending that's not in your Money file, you can view the details of your transactions.

However, if you enter an amount directly into a field in the Tax Estimator, you need to remember how you calculated the amount. You can always revert back to the values Money calculated.

No. The Tax Withholding Estimator saves only the most recent data you enter for each year. Each time you rerun the Tax Withholding Estimator, you overwrite the previous entries.