Form 1065 Schedule B-1 – Fillable PDF Download

Schedule B-1 (Form 1065) is an IRS attachment used by partnerships to disclose ownership of partnership interests by entities and individuals that own 50% or more of the profit, loss, or capital. Whether you are a general partner, limited partner, or an estate, accurate reporting on this schedule is critical for compliance with IRS Schedule B-1 requirements.

What Is Schedule B-1 (Form 1065)?

Schedule B-1 collects detailed information about owners who hold a significant stake (50% or more) in a partnership. The form asks for the owner’s name, taxpayer identification number, type of entity, and the percentage of ownership. This data helps the IRS track partnership structures and enforce tax rules on large ownership positions.

Who Must Complete Schedule B-1?

• Any partnership filing Form 1065 that has an individual, estate, or entity owning 50% +  of the partnership’s profit, loss, or capital.
• Foreign partners are also required to be listed if they meet the ownership threshold.
• Partnerships that do not have any 50% +  owners can leave Schedule B-1 blank, but the form must still be attached to the return.

How to Fill Out Schedule B-1 Online with Formize

Instead of printing, scanning, or using a separate PDF editor, you can complete Schedule B-1 directly in your browser:

1. Click the **"Fill out this form"** button below.
2. Wait a few seconds while the Formize PDF Filler app loads the fillable PDF.
3. Enter the required information in each field – the interface works like a web form.
4. Use the **Save** button to store a copy on your device or in the cloud.
5. When finished, download the completed PDF or submit it electronically with your Form 1065 filing.

Common Mistakes to Avoid on Schedule B-1

• Incorrect ownership percentage: Double‑check the % of profit, loss, and capital for each owner.
• Missing Taxpayer Identification Number (TIN): The IRS will reject the return if a TIN is omitted.
• Using the wrong entity type: Choose the exact classification (e.g., corporation, partnership, trust).
• Leaving blank rows: If an owner does not meet the 50% threshold, do not list them; leave the row empty.

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