SlowBooks Pro 2026 — Source Available License, version 2.0 (applies to every release of the Software published on or after the date this version of the license first appears in the repository; releases published earlier keep the license they shipped with) Copyright (c) 2026 Trent Von Holten 0. THE SHORT VERSION Free for you to use, forever, for personal use and for running your own business or organization, including a for-profit one. You may read, modify, and redistribute it. You may not sell it, rent it, or offer the Software itself as a paid service. Tools that connect to it are welcome, commercial or not. The forms and figures it produces are aids, not advice, and filing them is your responsibility. There is no warranty. The full terms below control. 1. DEFINITIONS "Software" means SlowBooks Pro 2026 in source or binary form, the associated documentation, and any Derivative Work. "Derivative Work" means a work that copies, modifies, or incorporates any part of the Software's source code, templates, or assets, in whole or in part. A program that only interoperates with the Software through its HTTP API, its import and export formats, or its company-file format, without incorporating its code, is NOT a Derivative Work. "Licensor" means the copyright holder named above. "You" means the person or organization exercising rights under this license. 2. PERMISSIONS Subject to the conditions below, the Licensor grants You a perpetual, worldwide, royalty-free, non-exclusive license to use, copy, modify, merge, and redistribute the Software for any purpose, including: (a) personal use; (b) internal use by a business, nonprofit, or other organization of any size, including a for-profit one, including keeping the books of that organization and of its own clients or members; (c) educational use and research; (d) building, selling, and supporting separate programs that interoperate with the Software as described in Section 1. The license for any given release is perpetual and irrevocable for that release: a version You have lawfully obtained stays licensed to You on these terms even if later versions change license or stop being published. 3. RESTRICTIONS You may NOT: (a) sell, rent, lease, or sublicense the Software or a Derivative Work, in whole or in part, or charge a fee for a copy of it; (b) offer the Software or a Derivative Work to third parties as a hosted, managed, or online service, whether paid directly or through a subscription, support fee, bundle, or advertising — "offering the Software as a service" means giving people outside your own organization access to the Software's user interface or API as the thing they are paying for. Using the Software to keep books for your own clients is internal use and is permitted under Section 2(b); selling those clients access to the Software itself is not; (c) include the Software or a Derivative Work, in whole or in part, in a product that is sold or in a service offered to third parties — including as a feature, module, or component of a larger paid product or hosted service — except as permitted by Section 2(d); (d) remove or alter the copyright notice, this license, or the attribution in Section 4; (e) use the Licensor's name, or the names "SlowBooks" and "SlowBooks Pro", to endorse or promote a Derivative Work, or ship a Derivative Work under those names. Forks must be renamed. Truthful statements that a program is derived from, or connects to, SlowBooks Pro are permitted. These restrictions bind licensees. They do not restrict the Licensor, who may license, sell, host, or support the Software on any terms. 4. REDISTRIBUTION AND ATTRIBUTION You may redistribute the Software and Derivative Works in source or binary form, provided that: (a) the redistribution is not for a fee and not as part of a paid product or service (Section 3); (b) this license and the copyright notice are included with every copy; and (c) the following acknowledgment is retained in the documentation or an About screen: "SlowBooks Pro 2026 — originally created by Trent Von Holten" 5. CONTRIBUTIONS Unless You state otherwise in writing when You submit it, any contribution You intentionally submit for inclusion in the Software is made under the Contributor Terms in CONTRIBUTING.md, which grant the Licensor a perpetual, irrevocable license to the contribution, including the right to relicense it, and confirm that You have the right to make that grant. You keep your copyright. 6. NO PROFESSIONAL ADVICE; TAX, PAYROLL, AND FILINGS The Software prepares accounting records, payroll calculations, tax forms (including W-2, W-3, 940, 941, state withholding, sales tax reports, and Schedule C), and payment files such as NACHA batches. These are AIDS TO YOUR OWN WORK, NOT ADVICE. The Software does not file anything with any tax authority, bank, or government. You are solely responsible for reviewing every figure and every form before You rely on it, file it, or pay from it. Tax law, withholding tables, rates, thresholds, and form layouts change; the Software's tables carry the year they were compiled and may be out of date. The Licensor makes no representation that any figure or form matches current federal, state, or local law. The Software is not a substitute for a licensed accountant, enrolled agent, attorney, or tax-authority- certified filing software. 7. NO WARRANTY THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE, ACCURACY, AND NONINFRINGEMENT. Statements on the project's website, in its documentation, or in its release notes describe what the Software is designed to do; they are not warranties. The Licensor has no obligation to provide updates, support, fixes, or continued availability of any version. "Free forever" describes the price of what has been released, not a promise of maintenance. 8. LIMITATION OF LIABILITY TO THE FULLEST EXTENT PERMITTED BY LAW, IN NO EVENT SHALL THE LICENSOR OR ANY CONTRIBUTOR BE LIABLE FOR ANY CLAIM, DAMAGES, OR OTHER LIABILITY ARISING FROM, OUT OF, OR IN CONNECTION WITH THE SOFTWARE OR ITS USE, INCLUDING WITHOUT LIMITATION ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, EXEMPLARY, OR PUNITIVE DAMAGES; LOSS OF DATA, PROFITS, REVENUE, OR GOODWILL; TAX PENALTIES, INTEREST, OR ASSESSMENTS; PAYROLL ERRORS; OR THE COST OF SUBSTITUTE SERVICES — WHETHER IN CONTRACT, TORT (INCLUDING NEGLIGENCE), OR OTHERWISE, AND EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. The Licensor's total liability for all claims relating to the Software shall not exceed the amount You paid the Licensor for it, which is zero. Some jurisdictions do not permit the exclusion of liability for gross negligence, willful misconduct, or certain implied warranties; to that extent only, the exclusions above do not apply, and the remainder of this Section stays in force. 9. INDEMNITY You agree to defend, indemnify, and hold harmless the Licensor and the contributors from and against any claim, loss, liability, penalty, or expense (including reasonable attorney's fees) arising from Your use of the Software, including: books You keep, payroll You run, forms and files You submit, payments You make, data You lose, Your redistribution or modification of the Software, and any service You give third parties with it. 10. THIRD-PARTY SERVICES AND DATA Payment processors, bank-feed providers, AI providers, and other services You connect to the Software are governed by their own terms; the credentials are Yours and the relationship is Yours. You are responsible for backing up your company files, for securing any machine or network You serve the Software from, and for who can reach it there. 11. TERMINATION This license terminates automatically if You breach Section 3 or 4. On termination You must stop distributing the Software and any Derivative Work and stop offering it as a service; You may keep using copies You already have for internal purposes. Sections 6 through 12 survive termination. The Licensor may seek injunctive relief for a breach of Section 3 in addition to any other remedy. 12. GOVERNING LAW AND VENUE This license is governed by the laws of the State of Illinois, without regard to its conflict-of-laws rules. Any dispute arising from it or from the Software shall be brought exclusively in the state or federal courts sitting in Will County, Illinois, and You consent to their jurisdiction and venue. If any provision is held unenforceable, the rest remains in effect. 13. ACCEPTANCE Using, copying, modifying, or redistributing the Software is acceptance of this license. The desktop application and the Windows installer display Sections 0, 6, 7, 8, and 9 before first use and record that they were shown.