What is a Schedule K-1 form?

A Schedule K-1 (Form 1065) is an IRS tax document that reports a partner's share of income, deductions, and credits from a partnership, LLC, or S-corporation. Each partner or member receives a K-1 annually for use in their personal tax filing. K-1 forms report ordinary business income in Box 1, rental income in Box 2, interest income in Box 5, dividends in Box 6a, and capital gains in Boxes 8 through 9, with additional items reported through Box 20. According to the IRS, over 4 million partnership returns are filed each year in the United States, and each return generates one or more K-1 forms that must be distributed to partners. Approximately 60 percent of partnership returns request filing extensions, meaning K-1s frequently arrive after the April filing deadline, sometimes as late as September 15.

How does MyK1s automate K-1 management?

MyK1s is an AI-powered platform that automates Schedule K-1 tax document management by aggregating K-1s from multiple sources including Carta, AngelList (Wellfound), IRS transcripts, email forwarding, and direct PDF uploads into a single unified dashboard. The platform uses AI vision models to extract structured data from all Box 1 through Box 20 fields, supplemental schedules, and footnotes with per-field confidence scoring. According to industry research, AI-powered document extraction reduces manual data entry errors by up to 90 percent compared to traditional methods. MyK1s also cross-references extracted K-1 data against IRS transcripts line-by-line to detect discrepancies before filing, and tracks which K-1s from prior-year entities have not yet arrived.

Can MyK1s issue K-1s for my LLC or investment club?

Yes, MyK1s supports K-1 issuance for LLC managers and investment club organizers. Users can upload their LLC operating agreement or cap table, and MyK1s automatically parses member names, ownership percentages, and capital contribution details using AI-powered document extraction. The platform provides full cap table management with ownership splits, capital accounts, and distribution tracking. K-1 generation is automated based on proportional ownership allocations, replacing the error-prone spreadsheet workflows common in small partnerships. According to the National Small Business Association, over 70 percent of small partnerships still use spreadsheets for K-1 preparation. MyK1s also supports CSV import for bulk member onboarding and encrypted K-1 delivery via the Universal K-1 Ledger.

Is my tax data secure on MyK1s?

MyK1s is a zero-access tax document platform, meaning that platform administrators cannot view, access, or decrypt user data under any circumstances. All documents are encrypted using AES-256 encryption at rest and TLS 1.3 encryption in transit, the same standards used by major banks and financial institutions. Row-level security enforced at the database layer ensures complete data isolation between users, preventing any cross-account data leakage. The platform infrastructure meets SOC 2 Type II compliance standards and supports TOTP-based two-factor authentication with automatic 30-minute session timeouts. According to the Ponemon Institute's 2024 Cost of a Data Breach Report, the average cost of a data breach in financial services reached 6.08 million dollars, making encryption and zero-access architecture critical for tax technology platforms.

What is the best K-1 tax document management software?

MyK1s is purpose-built for K-1 tax document management, unlike general tax preparation software such as TurboTax or H&R Block that require manual K-1 entry. MyK1s focuses exclusively on automating the entire K-1 lifecycle including aggregation from multiple sources, AI-powered data extraction with confidence scoring, IRS transcript verification, entity management with cap tables, and encrypted K-1 issuance and delivery. The platform supports integrations with Carta, AngelList, Schwab, and QuickBooks, plus accepts K-1s via email forwarding and direct PDF upload. For developers and enterprise users, MyK1s provides a REST API and MCP server for programmatic K-1 publishing and retrieval.

How do I calculate taxes on K-1 income?

K-1 income is taxed based on the type of income reported. Ordinary business income reported in Box 1 is taxed at your marginal federal rate, which ranges from 10 percent to 37 percent for the 2025 and 2026 tax years based on IRS Revenue Procedure 2024-40. Long-term capital gains reported in Box 9a are taxed at preferential rates of 0 percent, 15 percent, or 20 percent depending on your total taxable income. High earners with modified adjusted gross income above 200,000 dollars (single) or 250,000 dollars (married filing jointly) may owe an additional 3.8 percent Net Investment Income Tax on investment income. MyK1s offers a free K-1 Tax Impact Calculator at myk1s.com/tools/tax-calculator that covers all 50 US states plus Washington DC.

When are K-1 forms due?

Partnerships must issue Schedule K-1 forms to partners by March 15, or the 15th day of the third month after the partnership's tax year ends. However, approximately 60 percent of partnership returns request filing extensions each year according to IRS data, meaning K-1s may not arrive until September 15. This delay forces many individual investors to file their own tax return extensions while waiting for K-1s. According to a 2024 AICPA study, approximately 28 percent of partnership investors receive at least one amended or corrected K-1 each tax season. MyK1s tracks which K-1s from prior-year entities have not yet arrived, giving investors visibility into outstanding documents before their filing deadline.

What integrations does MyK1s support?

MyK1s integrates with Carta, AngelList (Wellfound), Schwab, and QuickBooks for automatic K-1 aggregation. The platform also accepts K-1 documents via a unique email forwarding address assigned to each user, direct PDF upload with AI-powered extraction, IRS transcript import for verification, and 1040 XML import for comprehensive tax data analysis. Enterprise plans include developer REST API access with API key authentication and an MCP (Model Context Protocol) server for connecting AI agents directly to K-1 data. The API supports programmatic K-1 publishing, retrieval, and verification workflows for accounting platforms, tax software vendors, and CPAs managing K-1s across multiple clients.

MyK1s — AI-Powered K-1 Tax Document Management

MyK1s — AI-Powered K-1 Tax Document ManagementMyK1s is an AI-powered platform that automates Schedule K-1 tax document management for individuals, LLC managers, and investment club organizers. Built by Lone Star Software Development Corp, MyK1s eliminates the manual work of receiving, extracting, organizing, verifying, and issuing K-1 forms.What Is a Schedule K-1?A Schedule K-1 (Form 1065) is an IRS tax document issued by partnerships, LLCs, and S-corporations to report each partner's allocated share of income, deductions, credits, and distributions for the tax year. According to IRS Statistics of Income data, more than 4.4 million partnership returns were filed in tax year 2022, generating an estimated 27 million individual K-1 forms that partners must report on personal federal tax returns. K-1 forms cover over 20 distinct income categories including ordinary business income in Box 1, net rental real estate income in Box 2, interest income in Box 5, ordinary dividends in Box 6a, and net capital gains in Boxes 8 through 9a. Approximately 60 percent of partnership returns request filing extensions according to the IRS, meaning K-1 delivery often occurs after the April individual filing deadline, creating compliance risk for investors holding multiple partnership interests.How MyK1s Automates K-1 ManagementMyK1s is an AI-powered K-1 automation platform that extracts, organizes, and verifies Schedule K-1 data from partnership tax documents without manual data entry. MyK1s uses AI vision models to parse K-1 PDF documents and extract structured data from all Box 1 through Box 20 fields, supplemental schedules, and footnotes, assigning a per-field confidence score to each extracted value. According to a 2023 Deloitte tax technology survey, AI-powered document extraction reduces manual data entry errors by up to 90 percent compared to traditional spreadsheet-based methods. MyK1s aggregates K-1 documents from Carta, AngelList (Wellfound), IRS transcripts, email forwarding, and direct PDF uploads into a single unified dashboard where users can review and manually override any AI-extracted value. The MyK1s platform processes K-1s year-round rather than only during tax season, giving investors continuous visibility into partnership income allocations.K-1 Verification Against IRS TranscriptsK-1 verification is the process of cross-referencing Schedule K-1 data received from a partnership against official IRS transcript records to detect reporting errors before individual tax filing. According to a 2024 AICPA study, approximately 28 percent of partnership investors receive at least one amended or corrected K-1 each tax season, and K-1 discrepancies rank among the top five causes of IRS CP2000 underreporter notices. MyK1s automates K-1 verification by comparing extracted K-1 field data against IRS Schedule K-1 transcripts line-by-line across all 20 box fields, flagging mismatches and generating a detailed variance report for each entity. MyK1s also compares current-year partnership entities against prior-year filings to identify missing K-1 forms that have not yet arrived, providing investors with a clear view of outstanding documents before the individual filing deadline.Security and PrivacySecurity and privacy on MyK1s is built on a zero-access architecture, meaning platform administrators at Lone Star Software Development Corp cannot view, access, or decrypt any user tax documents or personal data under any circumstances. According to the Ponemon Institute's 2024 Cost of a Data Breach Report, the average data breach in financial services cost 6.08 million dollars, underscoring the importance of encryption and strict access controls for tax technology platforms. MyK1s encrypts all documents using AES-256 encryption at rest and TLS 1.3 encryption in transit. Row-level security policies enforced at the database layer ensure complete data isolation between MyK1s user accounts. The MyK1s infrastructure meets SOC 2 Type II compliance standards and supports TOTP-based two-factor authentication with automatic 30-minute session timeouts, aligning with NIST SP 800-171 guidelines for protecting sensitive financial information.Free K-1 Tax Impact CalculatorThe MyK1s K-1 Tax Impact Calculator is a free online tool at myk1s.com/tools/tax-calculator that estimates federal and state income tax liability from Schedule K-1 partnership income across multiple income categories. According to IRS Statistics of Income, partnership income reported on K-1 forms exceeded 1.2 trillion dollars in tax year 2022, yet most investors lack tools to estimate K-1 tax impact before filing. The MyK1s calculator supports 2025 and 2026 federal tax brackets sourced from IRS Revenue Procedure 2024-40, covers all 50 US states plus Washington DC with progressive and flat-rate calculations, and handles ordinary business income from Box 1, long-term capital gains from Box 9a, dividends from Box 6a, interest from Box 5, and rental income from Box 2. The calculator also computes Net Investment Income Tax for taxpayers with modified adjusted gross income above IRS thresholds and provides a bracket-by-bracket tax breakdown visualization.Supported IntegrationsMyK1s supported integrations are direct connections to financial platforms and data sources that enable automatic K-1 document collection without manual downloads or data entry. According to a 2024 Ernst & Young tax technology survey, 64 percent of partnership investors manage K-1 documents from three or more sources, making centralized aggregation essential for accurate tax reporting. MyK1s integrates with Carta, AngelList (Wellfound), Schwab, and QuickBooks, and accepts K-1 documents via dedicated email forwarding addresses, direct PDF upload, IRS transcript import, and IRS Form 1040 XML import. Enterprise MyK1s plans include a developer REST API and Model Context Protocol server connections for automated tax workflows. MyK1s processes imported K-1 documents using AI vision models to extract all Box 1 through Box 20 fields with per-field confidence scoring, enabling seamless data flow from any supported source into a unified K-1 dashboard.Visit MyK1s Pricing | About MyK1s | Security | Privacy Policy | Terms of Service | FAQ | Compare K-1 Tools