You likely already know you need some version of Tax Form 1040 to file your personal taxes, and you'll also be needing your W-2 from your employer to help you fill it out. But you might be overlooking some of the other forms you'll need if you, say, won big on that trip to Las Vegas or started paying back your student loans last year.

Here’s a list of 12 tax forms you might not have known you needed.

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Form W-2G

What happens in Vegas stays in Vegas, except if you win money — then you might have to tell the IRS about it. Form W-2G, Gambling Winnings, is used to report gambling winnings (direct wager only) of $600 or more in any one session and 300 times the buy-in or wager.

Tax Form 1040X

Need to correct your tax return? Whether it's reporting additional withholding, changing your tax deductions or personal exemptions, adding or removing dependents or reporting additional income, this is the form to use. Remember, though, you do not need to file a 1040X if you are only correcting errors in math ― IRS computers automatically check the math and make those corrections for you.

Form 8822

Did you move? Well, the IRS would like to know. Form 8822 is used to report your change of address.

Tax Form 4868

Need an extension? If you are not able to file your federal individual income tax return by the due date, you may be able to get an automatic 6-month extension of time to file.

To do so, you must file Tax Form 4868 by the original due date for filing your tax return. It’s important to note that Form 4868 does not extend the time for payment of tax, which is still owed by the original due date of your return.

You will need to give an estimate of your taxes due when filing for a tax extension ― and you can pay none, all, or part of your estimated income tax due using a credit card or checking/savings account. It's also important to note that not paying your taxes can result in a tax lien, which can hurt your credit scores. (You can see where your credit currently stands by viewing your two free credits each month on Credit.com.)

Form W-10

Do you used child care or dependent care? Use this form to get the correct name, address and taxpayer identification number (TIN) from each person or organization that provides care for your child or other dependent if you plan to claim a credit for expenses related to their care, or if you receive benefits under your employer’s dependent care plan.

Form 1098

If you have a mortgage, you need Form 1098, the Mortgage Interest Statement, to report mortgage interest of $600 or more paid to your lender, which may be used as an itemized deduction.

Form 1098-C

Did you make a charitable contribution of a motor vehicle last year? Whether it was an automobile, boat, motorcycle or airplane, you’ll need this form to report it.

Form 1098-E

If you’re paying off student loans, you’ll need the 1098-E to report the interest you paid on them. That interest might qualify as an adjustment to your income.

Form 1098-T

Paying tuition for yourself or someone else? Grab a 1098-T to report either payments received or amounts billed for qualified tuition and related expenses. It could entitle you to an adjustment to income or a tax credit.

Form 5498

Did you contribute to an IRA last year? If so, you’ll need Form 5498 to declare those contributions.

Form 8889

If you have a health savings accounts, the administrator should be sending you a Form 8889. You’ll need it to deduct your contributions to the account.

Form 8962 

If you applied for health care coverage through Healthcare.gov or your state’s Health Insurance Marketplace, you may be eligible for the Premium Tax Credit, which helps you pay health insurance premiums. Form 8962 will help you figure out whether you qualify.