2- documenting donations to a church

If you make donations to a church of more than $250, make sure you have a signed letter documenting the amount that includes a statement about "no goods or services . . ." included as part of the donation. A very common mistake is for taxpayers to attempt deduction for the value of time or professional services that they contribute. That is simply an error that will lead to tax trouble.

1 - timing of last quarterly tax payment

If you expect to owe the Alternate Minimum Tax this year then delay paying your last quarterly tax payment until January of next year.