Can you please tell me if the money your mother left you was in a regular savings or checking account, or was it part of an IRA or other tax deferred account such as a 401k plan?
Also, what state do you and your mother live in?
There is no inheritance tax at the federal level. Instead, the IRS imposes estate taxes on any estates which exceed a certain value. That value is currently set at $3.5 million. If your mother's entire estate was valued at less than that amount, then no estate taxes are due. The state of OR does have a separate inheritance tax, but it does not apply to estates with a value of $1 million or less.
If your mother's estate exceeded the allowed federal or state limits, then the estate itself would pay taxes and the remaining assets would pass to the beneficiaries without further tax being due. The only exception to this would be if the money you inherited came from a tax deferred retirement plan such as an IRA account. If that were the case, you would have to pay regular income taxes when you withdrew that money.
However, if you received a check from the estate for these funds, then it is not likely that this money was part of a retirement fund. But check with the executor of the estate to make sure of the original source of those funds.
If this was helpful please press the Accept button. Positive feedback is also appreciated.