Individual Tax Preparation for Pass-Through Income

Tax Preparation for K-1 Income

A Schedule K-1 can make an otherwise ordinary individual tax return considerably more complicated.

TaxReturn.cpa prepares individual returns involving K-1 income from S corporations, partnerships and multi-member LLCs. We review the K-1 together with its attached statements, prior-year carryovers and other information that may affect how the items are reported on your return.

Know your price, see current production availability, and decide whether to move forward without scheduling a sales call.

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Individual tax preparation starts at $650.

A K-1 Is More Than Another Tax Form

A Schedule K-1 reports your share of income, deductions, credits and other tax items from a pass-through entity. Those items generally flow through to your individual tax return rather than being taxed only at the entity level.

For partnerships, the IRS notes that a partner may be taxed on an allocated share of partnership income whether or not the partnership actually distributed the same amount of cash.

That means the number in Box 1 is not necessarily the whole story. Your K-1 may also include rental activity, interest, dividends, capital gains, Section 179 deductions, charitable items, credits, Section 199A information, state allocations and other separately stated items.

See the broader types of returns we handle on our What We Prepare page.

Where K-1 Tax Returns Become Complicated

Why a K-1 Loss Is Not Automatically Deductible

One of the most important issues with K-1 reporting is that the loss printed on the form may not equal the loss you can deduct.

For partnership K-1s, the IRS describes several potential limitations that can apply in sequence: basis limitations, at-risk limitations, passive-activity limitations and excess-business-loss limitations.

S-corporation shareholders face similar loss limitations. The IRS specifically notes that receiving an S-corporation K-1 reflecting a loss does not automatically entitle the shareholder to deduct that loss.

Basis

Basis is a tax measure of your investment in the entity. Income, contributions, distributions, losses and other transactions can change it over time.

At-Risk Rules

Even when basis exists, the at-risk rules can further limit deductions to amounts for which you are economically at risk.

Passive-Activity Rules

Losses from activities in which you do not materially participate may be passive and may not be currently deductible against nonpassive income. The IRS explains these rules in detail in Publication 925.

Prior-year suspended losses can also matter, which is why prior returns and carryforward information may be important when we prepare the current-year return.

Why We Need the Entire K-1 Package

Please do not send only the first page of the K-1.

The IRS instructions specifically contemplate attached statements for items that require additional detail. A K-1 may use an asterisk or “STMT” indicator to show that information appears on an attachment.

Those supplemental statements can contain information related to Section 199A, rental activities, credits, foreign items, state allocations, basis reporting and other items that cannot be understood from the face of the K-1 alone.

For that reason, provide the complete K-1 package, including every attached statement and state schedule.

What We Review for a K-1 Return

Depending on your circumstances, we may review:

• Schedule K-1 from an S corporation
• Schedule K-1 from a partnership or multi-member LLC
• All supplemental statements attached to the K-1
• Ordinary business income or loss
• Rental and passive-activity items
• Interest, dividends and capital gains passed through by the entity
• Section 179 deductions
• Section 199A / QBI information when applicable
• State K-1s and state-source information
• Prior-year suspended losses and carryforwards when applicable
• Distributions and other owner-level information relevant to the individual return
• Multiple K-1s from different entities

Some situations—such as publicly traded partnerships, significant international reporting, unusual ownership changes or incomplete basis records—may require individual review before a final engagement price can be determined.

Does the K-1 Come From a Business You Own?

If the K-1 comes from your own S corporation, partnership or LLC, your individual return is only one part of the tax picture.

TaxReturn.cpa focuses on individual income tax preparation. Business tax-return preparation and separate advisory services are available through Boulanger CPA and Consulting PC.

If you own an S corporation, we'll also be adding a dedicated S Corporation Owners: Your Personal Tax Return resource to TaxReturn.cpa.

If your business is instead reported directly on Schedule C, see our CPA for Self-Employed and Schedule C Taxes page.

K-1 Income Can Create Multi-State Filing Issues

A pass-through business may operate in states where you do not live. Your K-1 package may therefore include state schedules or state-source income allocations.

Depending on the facts, that can create additional individual state filing requirements. If you have state K-1s or the entity operates in multiple states, include that information in the See Your Price questionnaire.

A dedicated CPA for Multi-State Tax Returns page is also part of the TaxReturn.cpa resource library.

What If Your K-1 Arrives Late?

K-1 taxpayers frequently depend on another entity's tax return being completed before their own individual return can be finalized.

If the K-1 is not available by the original individual filing deadline, an extension may be appropriate. An extension provides additional time to file the return, but it does not provide additional time to pay tax that may be due.

With TaxReturn.cpa, an extended return does not simply disappear into an undefined post-April backlog. Once your information is complete, your return is tied to an available production date and an expected completion timeframe.

Extended does not have to mean indefinite.

How Much Does CPA Tax Preparation With a K-1 Cost?

The fact that a return contains a K-1 tells us there is some additional complexity, but it does not tell us how complicated the entire return is.

One well-organized K-1 from a single S corporation is different from a return involving several partnerships, passive-loss carryovers, multiple states and extensive supplemental statements.

Our individual tax preparation pricing is based on the overall complexity of the return. Individual tax preparation starts at $650, and our See Your Price questionnaire determines the preparation level before you decide whether to engage us.

Know When Your K-1 Return Will Enter Production

TaxReturn.cpa gives you visibility into the process before you become a client. You can see your preparation price and current production availability online.

After engagement and payment, you'll choose an available production date and securely provide your tax information.

Your production date is not an appointment. It is the date your completed information—including the K-1s and related statements we need—is scheduled to enter our preparation workflow.

When all required information is complete by your production date, we expect to complete your return by the end of the third week following that date, subject to significant unexpected issues.

Learn how the TaxReturn.cpa process works →

Frequently Asked Questions About K-1 Tax Preparation

Do I have to report K-1 income if I did not receive a distribution?

Potentially, yes. Pass-through taxation generally requires owners to report their allocated share of taxable income even when the entity did not distribute an equal amount in cash. Partnership guidance from the IRS specifically notes this principle.

Can I deduct every loss shown on my K-1?

Not necessarily. Basis, at-risk, passive-activity and other limitations may reduce or defer the amount of loss you can deduct currently.

Why do you need the K-1 attachments?

Important information may appear only on supplemental statements. The IRS K-1 instructions specifically provide for attached statements when additional information is needed.

What if my K-1 arrives after the tax deadline?

An extension may be appropriate if you are still waiting for a K-1. An extension gives additional time to file the return, but it does not extend the time to pay tax that may be due.

Can you prepare a return with several K-1s?

Yes. Multiple K-1s can be handled, but the number of entities, attached statements, passive-loss issues, state filings and other factors can increase the preparation level.

What if the K-1 comes from my own S corporation?

We can prepare the individual return through TaxReturn.cpa. Business return preparation and separate business advisory services are handled through Boulanger CPA and Consulting PC.

Ready to See Your K-1 Tax Preparation Price?

You don't have to determine whether your K-1 makes your return Plus, Complex or something that requires individual review.

Answer a few questions about your tax situation and we'll show you the preparation level and price before you decide whether to move forward.

Know your price. See current production availability. Know when your return is expected to be completed.

See Your Price

Reviewed by Marc Boulanger, CPA | Updated September 2026

Related: What We Prepare  ·  Self-Employed & Schedule C  ·  Pricing  ·  How It Works  ·  Tax Preparation FAQs