If you don't know the difference between a W-2 and a W-4 or a 1040 and a 1099, you're not alone. Everyone needs to understand how every IRS tax form is used and when to use them. There are many forms ...

From the master tax return to basic tax information forms, browse Investopedia's expert-written library to learn more. Form 1078: Certificate of Alien Claiming Residence Definition ...

IRS Free File offers free guided tax preparation for low-income taxpayers and free electronic fillable forms for all taxpayers. IRS Direct File offers free direct filing for taxpayers with simple ...

Each year about this time, mailboxes across America are filled with tax forms. Sometimes, those tax forms go straight to a tax professional, unopened. Other times, taxpayers may dutifully open those ...

Julia Kagan is a financial/consumer journalist and former senior editor, personal finance, of Investopedia. Lea Uradu, J.D., is a Maryland state registered tax preparer, state-certified notary public, ...

Each year about this time, mailboxes across America are filled with tax forms. Sometimes, those tax forms go straight to a tax professional, unopened. Other times, taxpayers may dutifully open those ...