AI-Powered K-1 Parser

Extract income allocations, deductions, and credits from Schedule K-1 forms—partnerships, S-corps, estates, and trusts—without manual line-by-line keying.

SOC 2 Type 2 certified IRS-compliant processing 256-bit encryption

See K1 parsing in action

Upload any document — PDF, scan, or photo — and get structured data back immediately. No setup, no templates, no waiting.

Compliance

Built for regulated industries

SOC 2 Type 2

Audited controls over a sustained period, not a point-in-time check.

AES-256 encryption

Bank-grade encryption at rest and TLS 1.2+ in transit.

24-hour deletion

Documents deleted within 24 hours. No copies retained.

How it works

Parse Schedule K-1 forms in three steps

Upload Schedule K-1 forms from partnerships or S-corps

Drop K-1s from Form 1065, 1120-S, or 1041 as PDFs or scans. The parser handles all K-1 variants and tax years.

AI extracts ordinary income, rental income, and capital gains

The parser reads partner share of income, deductions, credits, and self-employment earnings from each K-1 box automatically.

Export K-1 data to your tax software or compliance spreadsheet

Download parsed K-1 data as Excel, CSV, or JSON. Feed it directly into tax preparation software via the REST API.

What teams are saying

“Our clients hold interests in multiple private equity funds. Processing thirty K-1s per client used to take our team a full day. Now it takes under an hour for the entire batch.”
VC
Victoria C.
Tax Partner, Wealth Advisory
“The supplemental statement extraction is what sets this apart. Most tools only read the front page of the K-1. This captures the footnotes and Section 199A detail we actually need.”
MG
Michael G.
Senior Tax Manager
“K-1s from real estate partnerships are notoriously complex. The parser handles the rental income breakdowns and at-risk calculations without any manual mapping.”
SB
Sandra B.
Tax Director, Real Estate Fund

Why K-1 parsing is one of the hardest problems in tax automation

Schedule K-1 is among the most complex forms in the US tax system. Each K-1 reports a partner’s or shareholder’s share of income, deductions, credits, and other items from a partnership, S corporation, estate, or trust. The form has over twenty line items spanning ordinary business income, rental income, interest, dividends, royalties, capital gains, Section 179 deductions, credits, foreign transactions, and alternative minimum tax items. K-1 parsing automates the extraction of all these fields.

The complexity of K-1 parsing comes from the form’s density and the variation across issuers. A K-1 from a real estate partnership looks different from one issued by a private equity fund or a family trust. Many K-1s include supplemental statements that extend the data beyond the standard form, adding pages of footnotes and detailed breakdowns that also need to be captured. Template-based tools cannot handle this variability without extensive per-issuer configuration.

Investment firms and tax advisory practices that manage clients with multiple partnership interests face particular K-1 parsing challenges. A single high-net-worth client might receive fifteen to thirty K-1s from various entities, each requiring accurate data entry into tax preparation software. Lido reads any K-1 format on the first upload, extracting standard line items and supplemental data into structured output without per-issuer setup.

When evaluating K-1 parsing solutions, firms should prioritize accuracy on complex line items like Section 199A qualified business income, foreign tax credit allocations, and at-risk limitations. Lido provides field-level confidence scores and supports Excel, CSV, and JSON output for integration with tax preparation workflows.

Frequently asked questions

What is K-1 parsing and why is it difficult?

K-1 parsing is the automated extraction of data from IRS Schedule K-1 forms, which report a partner’s share of income, deductions, and credits from partnerships, S-corps, estates, and trusts. It is difficult because K-1s have over twenty line items, vary significantly across issuers, and often include multi-page supplemental statements.

Which K-1 form types does the parser support?

Lido supports Schedule K-1 from Form 1065 (partnerships), Form 1120-S (S corporations), and Form 1041 (estates and trusts). The AI handles all three variants plus their supplemental statements without separate configuration.

Can K-1 parsing handle supplemental statements?

Yes. Many K-1s include supplemental pages with detailed breakdowns of income categories, footnotes, and Section 199A information. Lido extracts data from both the standard K-1 form and attached supplemental statements in a single pass.

How accurate is AI-powered K-1 parsing?

AI-powered K-1 parsing achieves high accuracy on standard line items and flags complex fields like at-risk limitations and foreign tax allocations with confidence scores. This allows tax professionals to focus review time on the items that matter most rather than checking every field manually.

What output formats are available for parsed K-1 data?

Parsed K-1 data can be exported to Excel, Google Sheets, CSV, or JSON. The structured output maps each K-1 line item to a column, making it straightforward to import into tax preparation software or consolidate data across multiple entities.

Can ChatGPT parse K-1 forms?

For one-off lookups, yes — upload a clean PDF and ask for specific field values. The problem is reproducibility: ChatGPT’s output structure changes run to run, you can’t lock field mappings, and there’s no entity layer. You can’t build a pipeline on it. Lido’s parser locks extraction logic per K-1 variant (Form 1065, 1120-S, 1041), classifies documents by EIN, and runs fuzzy address matching against a master list — same rules on document 1 as document 5,000.

Simple, transparent pricing

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Standard
$29 /month
100 pages per month · 1 user
  • Any file type supported
  • Excel, CSV, JSON export
  • Email auto-forwarding
  • AI columns for custom fields
  • SOC 2 Type 2 compliant

Built on Lido’s OCR engine

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Custom
From $30,000/year
  • Everything in Scale
  • Custom ERP integrations
  • Dedicated account manager
  • Live onboarding
  • BAA for HIPAA
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