Changing the name of your LLC with the Internal Revenue Service is easy, and in many cases does not require also changing your tax ID number.A limited liability company, or LLC, is a form of business association that combines the pass-through taxation and flexibility of a partnership with the limited liability of a corporation. The Internal Revenue Service does not recognize LLCs for the purposes of federal taxation, instead classifying them as a corporation, sole proprietorship or partnership. If you have changed the name of your LLC, reporting your name change to the Internal Revenue Service generally only requires indicating this on the companyu2019s yearly tax return.Step 1Determine if you need to apply for a new IRS Employer ID Number, or EIN. The IRS does not require you to obtain a new EIN if you merely change the name of your LLC. However, obtain a new EIN if your LLCu2019s name change is the result of a change in business organization, such as a conversion from a corporation to an LLC. If you must obtain a new EIN, apply online via the Internal Revenue Service's EIN Assistant.Step 2File a yearly Form 1120 as a corporation (see Resources). Check u201cName Changeu201d under Line E on Page 1. Form 1120 is the U.S. Corporation Income Tax Return, where a company must disclose yearly income and debts. Supply the new name of your company under Section A. You do not need to include the old name of your company. A company officer must sign the form.Step 3File a yearly Form 1120S as an S-corporation (see Resources). Check u201cName Changeu201d under Line H on Page 1. Supply the new name of your company under Section A. You do not need to include the old name of your company. A company officer must sign the form.Step 4File a yearly Form 1065 as a partnership (see Resources). Check u201cName Changeu201d under Line G on Page 1. You only need to supply the new name of your company, and a company officer must sign the form.Step 5File as a sole proprietor. Write a letter informing the IRS of the name change. Mail it to the IRS at the address where you file your yearly tax return. The IRS does not have an official notification form if you file as a partnership; however, a company officer must sign the letter notifying the IRS of the name change.