Update August 2015 V2: Disney Infinity have announced the three additional characters coming to Disney Infinity 3.0 and they are Spot from 'The Good Dinosaur' as well as Judy & Nick from 'Zootopia' both of which are new Disney films set to launch this year.
Receipts for income tax payments and other bills related to it must be kept for three years. The Internal Revenue System conducts audit every three years. It will be at your advantage to keep receipts that are vital for your tax deduction as well as credits that you have availed in your tax.
How long you should keep a receipt depends on what it is for. A receipt for merchandise covered by a warranty needs to be filed away safely at least until the warranty runs out. Keep receipts for large purchases until you no longer own the item. For example, suppose you purchase a $4,000 cedar wardrobe and you later decide to sell it. With the receipt, you can show potential buyers the original purchase price. You may also need it for insurance purposes should something happen to the piece.