# Form 6198

URL: https://pdf.net/pdf-forms/tax-forms/form-6198
Category: Tax Forms
Attributes: Trusted by accountants, Official IRS form

IRS Form 6198 is used to figure out how much of a loss from an at-risk activity you can deduct. Our fillable Form 6198 opens in your browser, so you just need to enter your figures, adjust them as your numbers change, and download a clean copy.

## Versions

- 2025 — [download PDF](https://cdn.sanity.io/files/i16te7yp/production/5b70e61e47857b601d223f347c58f35a3223b52c.pdf)

## How to Fill Out Form 6198

1. Open the printable Form 6198 in your browser
2. Complete Part I with your current-year profit or loss
3. Figure your amount at risk in Part II or Part III
4. Enter your deductible loss in Part IV
5. Review your entries, then download or print the form

## Facts

### What Is Form 6198 Used For?

Form 6198 is used to figure your current-year profit or loss from one at-risk activity, the amount you have at risk, and your deductible loss. The Form 6198 instructions organize this into four parts, and Section 465 caps the deduction at your at-risk amount.

### Who Should Use Form 6198?

You should use IRS Form 6198 if you are an individual, estate, trust, or certain closely held C corporation claiming a loss where part of your investment is not at risk. The Form 6198 at-risk limitations reach partners and S corporation shareholders too.

### When Is Form 6198 Due?

The Form 6198 due date matches your income tax return deadline, since it’s attached to it. Most individuals file by April 15th, or October 15th with an extension. Fiscal-year filers follow their own return schedule.

### What Happens If Form 6198 Is Not Submitted?

If Form 6198 is not submitted, the IRS can disallow the at-risk loss you claimed and recalculate your tax. No separate late fee exists, so Form 6198 penalties usually arrive as a 20% accuracy-related penalty plus interest on the underpayment.

### How and Where Do I File Form 6198?

You file Form 6198 by attaching it to your federal income tax return, never by mail. The Form 6198 filing requirements call for one form per activity, so keep each copy with your other stored legal and tax documents.