--- title: K1x Reviews meta_title: 'K1x Reviews 2026: Details, Pricing, & Features | G2' meta_description: Filter 12 reviews by the users' company size, role or industry to find out how K1x works for a business like yours. aggregate_rating: rating_value: 4.5 review_count: 12 scale: '5' date_modified: '2026-06-26' parent_category: name: Tax Software url: https://www.g2.com/categories/tax-software --- # K1x Reviews **Vendor:** K1x **Category:** [Corporate Tax Software](https://www.g2.com/categories/corporate-tax) **Average Rating:** 4.5/5.0 **Total Reviews:** 12 ## About K1x Private market tax data is broken at every handoff. Fund managers produce K-1s through manual, error-prone processes that delay investors and create downstream liability. Accounting firms receive those same K-1s in volumes that extraction tools only partially handle — leaving footnotes, K-3 schedules, and state allocations for senior staff to close manually. And the entire ecosystem runs on disconnected tools built for general purposes and retrofitted to tax. K1x is the only tax-first AI platform built by CPAs for the full private market tax data lifecycle — from K-1 production to K-1 receipt, from investor reporting to exempt organization compliance. Patented technology. Open by design, it works inside the tax stack you already run. No walled garden. No vendor lock-in. Just end-to-end private market tax intelligence so your best people are finally free to do your best work. A Fast Company Most Innovative Companies honoree and U.S. Fintech Award winner, K1x is trusted by: • 44 of the 100 largest U.S. institutional investors • 20 of the top 25 accounting firms • 45 of the top 100 university endowments —and by the tax professionals within them who deserve better than nights and weekends wasted keying, collating, and copy-pasting. ## K1x Reviews ### 1. Streamlined Tax Processing with K1x **Rating:** 4.0/5.0 stars **Reviewed by:** Adrien M. | Tax Senior, Small-Business (50 or fewer emp.) **Reviewed Date:** April 10, 2026 **What do you like best about K1x?** I find K1x incredibly useful for handling investment partnerships. It makes inputting K-1s super easy, which saves me a lot of time. The ability to import directly into our tax software after we're done is a big plus. I particularly like the import functionality, as being able to import and export from the software makes it incredibly easy to work on clients that receive a lot of K-1s. It saves us so much time from having to input things manually. **What do you dislike about K1x?** I believe the K-3 and State K-1 readers need to be improved. They sometimes put amounts on wrong line items, which I then need to manually fix. The initial setup was not super easy, but not incredibly difficult either. **What problems is K1x solving and how is that benefiting you?** I find K1x makes inputting K-1s super easy and allows direct import into our tax software, saving us time on manual data entry. ### 2. User-Friendly with Accurate Data Extraction **Rating:** 4.0/5.0 stars **Reviewed by:** Allison V. | Mid-Market (51-1000 emp.) **Reviewed Date:** April 10, 2026 **What do you like best about K1x?** I really like that K1x is user-friendly and straightforward to use. The support team is very responsive whenever I encounter an issue. I find the accuracy in data extraction particularly reliable. The automatic saving feature is a great convenience since there's no need to manually press save. It simplifies tying out complex returns and significantly saves time. The initial setup was also very easy. **What do you dislike about K1x?** The UBIA and QBI don't import as well as expected. The state reports aren't as accurate as the federal reports, and K1x doesn't pull the adjustments in correctly for state or doesn't pick up every adjustment. When QBI is extracted and imported into CCH Axcess, it sets up as multiple columns of info rather than a single column. **What problems is K1x solving and how is that benefiting you?** I use K1x for accurate data extraction, simplifying tax preparation, and saving time with automatic saving features. ### 3. First Year Not for Profit Preparation **Rating:** 5.0/5.0 stars **Reviewed by:** Timothy W. | Tax Director, Small-Business (50 or fewer emp.) **Reviewed Date:** December 02, 2025 **What do you like best about K1x?** The intuitive ease of use in preparing tax returns. The product was promoted as being designed to be task specific. We used it for Form 990 and Form 990-T preparation and this was our first year using it. It could not have gone smoother. **What do you dislike about K1x?** There are schedules and footnotes across several state tax returns that are not currently available in K-1x. The work around was to separately prepare the schedules and footnotes and attach to the returns as pdfs. The support staff is committed to including the required (and even optional) schedules and we look forward to the evolution of the product. **What problems is K1x solving and how is that benefiting you?** Our third party accounting firm was the conduit through which we accessed K-1x. Our greatest benefit was the time saving in the review process. Since the platform instantaneously updates the tax returns, there is less back and forth, and NO delay, in the preparation through final approved tax return process. ### 4. K1X is User-Friendly Tax Software with Outstanding Features and Support **Rating:** 5.0/5.0 stars **Reviewed by:** Susanne S. | Enterprise (> 1000 emp.) **Reviewed Date:** December 03, 2025 **What do you like best about K1x?** The tax input wording in K1X is the same wording used on tax forms, making it very easy to use and understand. The software is very user friendly, and the customer service support representatives are friendly, helpful, and receptive to making improvements to software based on your feedback. K1X provides an online training certification, which is new this year, and other occasional training is provided periodically for no charge. In addition, tax instructions and other helpful data are provided within the software itself. I've used several tax compliance software programs throughout my career, but K1X is truly superior and more user friendly than others. **What do you dislike about K1x?** K1X has the Alternative Investment Module which has many foreign forms available, but not all. They are relatively a young company but are committed to adding more forms into their software and providing other enhancements each year. One of the best things about the alternative investment module is that you have all the historical data in one place, with NOL carryovers and much data that carryover each year with the rollovers. **What problems is K1x solving and how is that benefiting you?** K1X solved the problem of having all company historical tax data and various forms in one place. They keep adding various modules that provide additional information and support, some of which I have not been able to take advantage of yet but hope to try this tax year. They provide Excel templates that can be added and linked to existing Excel workpapers, then uploaded into K1X with a click of a button, eliminating the need of duplicating data input! Their diagnostics and e-file validation checks help eliminate e-file errors ahead of time which help make e-filing process go smootly. There are many benefits to the K1X software, some of which I'm still learning. ### 5. Streamlined Tax Filings, Exceptional Support **Rating:** 5.0/5.0 stars **Reviewed by:** Reina M. **Reviewed Date:** December 02, 2025 **What do you like best about K1x?** I like K1x for its simplicity and how everything is in one place, making it very straightforward to use. The support system is excellent; I'm able to contact them and receive an immediate response, which is very helpful as they usually guide me on how to fix any issues, often pointing out that the problem was on my end. I appreciate that they understand the tax laws well, particularly for a business supporting nonprofits and trusts, and they easily guide me through any problems by pointing to relevant rules or instructions. Additionally, they often show me things I wasn't aware of, demonstrating a profound understanding of their field. This responsiveness and expertise make me confident in saying they are very on top of their game. **What do you dislike about K1x?** I find that the diagnostic feature in K1x could use improvement. The diagnostics sometimes incorrectly indicate mismatches between schedules, which can be frustrating. Even though I have the option to override these alerts, I rely heavily on accurate diagnostics to identify issues in tax returns because I work independently before senior management review. It is important to me that the diagnostics reliably identify real discrepancies rather than presenting non-existent ones. **What problems is K1x solving and how is that benefiting you?** I use K1x to efficiently complete and compile tax returns for multiple states, ensuring all numbers match. It saves all supporting work papers to the cloud for easy review and simplifies my job as a department of one. ### 6. Effortless Data Extraction with Impressive Accuracy **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Higher Education | Enterprise (> 1000 emp.) **Reviewed Date:** December 03, 2025 **What do you like best about K1x?** My team appreciates the ease of use, the the accuracy of the data extraction. **What do you dislike about K1x?** K1x is still working on 926 and 8865 data extraction and compilation and it does not work well for state returns subject to siloing rules. **What problems is K1x solving and how is that benefiting you?** K1x allows us, as an internal tax team, to switch from compiling data from hundreds of K1s to reviewing the accuracy of the data from hundreds of K1s. The allows our team to focus on more high level value adding work, resulting in better compliance and increased tax savings. ### 7. Buggy UBI Reading: State Forms and Federal Data Need Better Accuracy **Rating:** 2.0/5.0 stars **Reviewed by:** Verified User in Accounting | Mid-Market (51-1000 emp.) **Reviewed Date:** February 17, 2026 **What do you like best about K1x?** You can prepare the foreign forms in K1X with the white paper statements fairly easily. **What do you dislike about K1x?** The software seems to have lots of issues, it can't read State UBI, 926 or 8865 information yet. It also is not always accurate when it reads Federal UBI. **What problems is K1x solving and how is that benefiting you?** It can store data well. **Official Response from Solutions Engineering:** > Every investment portfolio is unique and while we strive to be the best reader across multiple areas of the K1 far surpassing the competition, we also recognize that individual experience may vary given the vast presentation differences amongst the 45 million K1s in the ecosystem. We're sorry to hear that this is your impression and encourage you to reach out to your representative directly to implement some solutions that can improve your overall experience. ### 8. Huge Time-Saver for K1 Analysis and Exporting Summarized Data **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Accounting | Mid-Market (51-1000 emp.) **Reviewed Date:** February 16, 2026 **What do you like best about K1x?** Great time save with analyzing K1s then being able to export useful, logical reports for use **What do you dislike about K1x?** Continual improvements to be made to foreign reporting. Some have been made, but a bit more to go **What problems is K1x solving and how is that benefiting you?** TIME! Saving time. And organizing lengthy list of investments and rolling data year to year ### 9. MAKING WHITE PAPER DETAIL A BREEZE **Rating:** 5.0/5.0 stars **Reviewed by:** Shauna I. | Tax data integration/ Prodution, Accounting, Mid-Market (51-1000 emp.) **Reviewed Date:** September 30, 2025 **What do you like best about K1x?** IT IS EXTREMELY USER FRIENDLY AND VERY FAST **What do you dislike about K1x?** WISH IT WAS ABLE TO READ ALL TAX DOCUMENTS AND WHITE PAPER DETAIL OF THE BROKERAGE STATEMENTS **What problems is K1x solving and how is that benefiting you?** THIS PRODUCT IS ELIMINATING A REVIEW STEP AND A DATA ENTRY STEP. IT ALSO SPEEDS UP THE ENTRY PROCESS ### 10. Excellent for reading Fed K-1s **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Investment Management | Mid-Market (51-1000 emp.) **Reviewed Date:** October 17, 2025 **What do you like best about K1x?** How accurately and easily it can read the Fed K-1 and pushes it into CCH. Makes it easier to tie out the return at the end of the day. **What do you dislike about K1x?** There is room for improvement in how K1x reads State K-1s, but the software has already improved over the last few months. **What problems is K1x solving and how is that benefiting you?** Allowing staff to work quicker ### 11. K1x Has Transformed Our Exempt Org. Tax Practice For The Better **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Accounting | Mid-Market (51-1000 emp.) **Reviewed Date:** January 27, 2025 **What do you like best about K1x?** The software is much more user friendly than it's competitors with easy naviagation, the option save all changes made automatically and the ease of importing and exporting data. The support team at K1x is also exceptional! Whenever our team or client has issues, we get responses and support teams looking into it that day. **What do you dislike about K1x?** As it's been around for not as long as it's competitor's, K1x is constantly growing, adding more features. We have ran into a few situations where K1x didn't have the compatiability for a specific form. However, the team is great to work with and everytime we point something like this out, they work tirelessly to help integrate these forms into the software! **What problems is K1x solving and how is that benefiting you?** K1x is providing our practice a more streamlined tax preparation software than the other two competitors we have used for a number of years. They are dedicated to constantly working with us and making it better to meet our unique needs as an Exempt Orgs. practice! ### 12. K1x works! **Rating:** 5.0/5.0 stars **Reviewed by:** Daniel F. | Senior Tax Accountant, Mid-Market (51-1000 emp.) **Reviewed Date:** December 13, 2023 **What do you like best about K1x?** I use C-Trac to file 4 990s every year along with 990-Ts. I do not ever have problems with the program. In 2023 I did not contact support even one time. Previously when we had a problem, it was addressed in less than 1 hour and we were back up and running. I highly recommend K1x and C-Trac. If you are filing 990s, you will not be disappointed with the software, ease of use, and help and guidane from this company. **What do you dislike about K1x?** There really are no downsides to this. I actually look forward to preparing and filing the returns using K1x! **What problems is K1x solving and how is that benefiting you?** Needing a software to file 990s. K1x allows us to electronically file with the returns with the IRS with ease. We also employ an outside CPA firm to review our returns and K1x allows them to log in to view the returns so there is no back and forth with PDFs and getting confused which is the most recent. They have access to real time returns. - [View K1x pricing details and edition comparison](https://www.g2.com/products/k1x/reviews?section=pricing&secure%5Bexpires_at%5D=2026-06-26+16%3A14%3A05+-0500&secure%5Bsession_id%5D=7f2553dc-5db1-4033-8291-0bc0a064bbdf&secure%5Btoken%5D=d7adbdde6909cb384a25bc4139eee1412cd18a30e59261b3f076fa38ec222a7d&format=llm_user) ## K1x Features **Tax Planning** - Strategies - Exemptions - Credits - Estimations **Tax Filing** - Calculations - Rules & Regulations - Reporting **Workflows** - Integrations - Importing ## Top K1x Alternatives - [Avalara](https://www.g2.com/products/avalara/reviews) - 4.0/5.0 (804 reviews) - [Vertex](https://www.g2.com/products/vertex-inc-vertex/reviews) - 4.4/5.0 (458 reviews) - [Intuit ProConnect Tax](https://www.g2.com/products/intuit-proconnect-tax/reviews) - 4.4/5.0 (275 reviews)