Question: how many stamps do i need to send a tax return?
Answer: One quick way to estimate the amount of postage you would need on an amended tax return in an ordinary envelope (not a large 9 X 12) is: 1 stamp for every 5 pages. So if you have 6 - 10 pages you need 2 stamps. If you are using a larger envelope, you need to add an additional stamp (Forever type).