Fred read the posts above and understand I've had to pay it, so that's my proof.
Yes, you may have had to pay it at one time, but it does not exist today. I'm not exactly sure on this but I'm thinking it was during George W. Bush's Presidency that it was done away with.
As of today...right now....there is absolutely "No Federal Inheritance Tax" Period. End of story.
I'll post this again along with the link.
States with an inheritance tax
The federal government does not have an inheritance tax. The eight states that impose an inheritance tax include Indiana, Iowa, Kentucky, Maryland, Nebraska, New Jersey, Pennsylvania and Tennessee. Of course, state laws are subject to change, so if you are receiving an inheritance, check with your state's tax agency. The tax rates on inheritances can be as low as 1 percent or as high as 20 percent of the value of property and cash you inherit.
https://turbotax.intuit.com/tax-tools/tax-tips/Taxes-101/What-are-Inheritance-Taxes-/INF14800.html
Now...You very well may have paid an "Estate Tax, or a State Inheritance Tax, but as of today there is absolutely and I will say it again...absolutely NO FEDERAL INHERITANCE TAX.
Inheritance Tax is not the same as "Estate Tax " or even "Gift Tax" or "State Inheritance Tax"
If you did indeed pay a Federal Inheritance Tax, it was either before the repeal, or someone scammed you. Because as of the last 2 years that I have been involved in an estate probate process, there is No Federal Inheritance Tax.