Getting an EIN for Your Ohio Limited Liability Partnership

An Employer Identification Number — sometimes called a Federal Tax Identification Number — is a nine-digit number the IRS assigns to a business. Think of it as a Social Security number for your partnership: it identifies the LLP to the federal government for tax purposes and shows up on returns, bank paperwork, and payroll filings.

For an Ohio LLP, an EIN isn't just nice to have — it's effectively required. A partnership with two or more partners must file an informational partnership return (Form 1065) with the IRS, and that return is filed under the partnership's EIN, not any individual partner's Social Security number. Since an LLP by definition has at least two partners, essentially every Ohio LLP needs its own EIN.

What you'll use the EIN for

• Filing the partnership's federal return — Form 1065 and the Schedule K-1s issued to each partner
• Opening a business bank account — banks require an EIN to open an account in the partnership's name
• Hiring employees — payroll tax reporting runs on the EIN
• Ohio tax accounts — registering for state tax obligations, such as employer withholding or the Commercial Activity Tax, generally uses the EIN
• Vendor and client paperwork — providing a W-9 to clients uses the EIN instead of a partner's SSN

Sequence matters. The smoothest path is to register your LLP with the Ohio Secretary of State first, then apply for the EIN once the partnership officially exists.

Why order matters

The EIN application asks for your legal business name and the state where you're registered. Applying after your Registration of a Domestic Limited Liability Partnership is accepted means the name you give the IRS matches the name on file with the state, which keeps your bank, the IRS, and the Secretary of State all pointing at the same entity. Applying before the LLP is registered risks a name mismatch that causes confusion later.

Right after the EIN

Once you have the EIN, you can open the partnership's bank account — a step that's essential for keeping partnership and personal finances separate, which in turn protects the liability shield. Have your filed registration, your EIN confirmation, and your partnership agreement ready when you visit the bank.

The IRS issues EINs directly, and the application is free. Be skeptical of any site that charges a fee just to "get" an EIN — you can do it yourself in about ten minutes.

The online application (fastest)

1. Go to the EIN Assistant on the official IRS website, IRS.gov
2. Select that you're applying for a partnership
3. Enter the partnership's legal name and Ohio address exactly as registered
4. Provide the name and Social Security number or ITIN of the "responsible party" — typically one of the partners
5. Submit and receive your EIN immediately; save and print the confirmation letter

The online tool is available during posted IRS hours and issues the number on the spot. The responsible party is the person who controls or manages the partnership; for most LLPs, that's a managing partner.

If you don't have an SSN or ITIN

The online application requires the responsible party to have a US Social Security number or ITIN. If your responsible party has neither — common for partnerships with non-US-resident partners — you apply using Form SS-4 by fax or mail instead. This takes longer than the instant online process, so plan ahead if it applies to you.

Who counts as the responsible party

The IRS requires you to name a single responsible party on the application: a person who ultimately controls, manages, or directs the partnership and the disposition of its funds and assets. For an Ohio LLP, that's typically a managing partner or the partner handling the firm's finances. The responsible party must be an individual — not another business — unless a government entity is involved. Choose someone who will be around, because the responsible party is the IRS's point of accountability for the EIN, and you'd have to file a change if that person leaves.

What information to have ready

Before you start, gather the partnership's exact legal name and Ohio principal-office address as they appear on your state registration, the responsible party's name and SSN or ITIN, the number of partners, the date the partnership started or expects to start business, and a short description of the partnership's principal activity. Having these in front of you means the ten-minute application actually takes ten minutes rather than stalling halfway through.

The EIN process is simple, but a few avoidable errors cause headaches down the line. Knowing them in advance saves you a call to the IRS.

Watch out for these

• Paying a third party just for the number — the IRS never charges for an EIN; a fee for the EIN alone is unnecessary, though a full-service formation package may reasonably include it as part of a bundle
• Applying before the LLP is registered — get the state registration accepted first so the names match
• Name mismatches — enter the partnership's legal name exactly as it appears on your state registration, designator and all
• Choosing the wrong entity type — apply as a partnership, not a sole proprietorship or corporation, unless you've made a specific tax election
• Losing the confirmation letter — save the IRS confirmation (often called the CP 575); banks and lenders ask for it, and it's the cleanest proof of your EIN
• Applying for multiple EINs — one partnership needs one EIN; don't reapply if you already have one

If you lose your EIN

If you misplace the number, you can find it on a prior tax return, on old bank paperwork, or by calling the IRS Business & Specialty Tax Line to have it looked up. There's no need — and no way — to get a second EIN for the same partnership.