Tax Topic 151 means that you're getting a tax offset (less of or no refund), which is where the Department of Treasury will be taking your refund to pay for something that has been reported that you owe.
The most common reasons for getting a tax offset are unpaid taxes, unpaid child support payments, and offsets for federal student loans that are considered in default.
If you received Tax Topic 151 error code, the IRS generally will not help you. They will send you a letter that explains why you won't be getting your refund, or how much of the refund was taken. In that letter will be instructions for you to follow to appeal the actions the IRS has taken. It will also specify a "drop dead" date. If you don't start your appeal action by the drop dead date, then you lose.
So basically, you won't know anything until you get that letter.
