A credit bureau gathers information about how consumers use credit. In other words, they collect information from as many consumer financial transactions or inquiries as they can. They then sell access to that combined information to anyone who has a legally-recognized reason (permissible purpose).

According to Experian.com, an unpaid tax lien will most definitely affect your credit score negatively. How much, however, varies since Experian notes that it depends on an individual’s overall track record of paying bills on time. The important thing is to find ways to get the IRS lien paid before considering options you have that can remove a current or old and paid lien from your credit score.

If you find errors or inaccuracies in your credit history file, you will have to submit a dispute letter or request to each of the credit bureaus on which the mistake appears. In some cases you may be able to dispute the error with online forms, but in some cases you’ll have to submit a letter with your corroborating documents.

The credit bureau keeps record of an individual’s credit history. A credit bureau prepares an individual’s credit report that contains every payment detail for that individual. A credit report also contains an individual’s personal information such as the name, residential address, official address, etc.

Keep in mind that changes in your FICO score take a long time to occur but if you live by the following guidelines, your credit score will improve over time.