To track your nondeductible contributions, you should have filed Form 8606 over the years.
Here are some steps to take now to reduce your heirs' tax liability when you die.
An IRA is a great resource for retirement income, but it helps to understand the jargon.
The IRS imposes different contribution limits for different retirement plans, and they often change.
If you fouled up your IRA transfer, taxes may be due. Or you can appeal to the IRS.