Legal
CheckLynx End User License Agreement
Effective Date: September 25, 2026 · Last Updated: September 25, 2026
This End User License Agreement (the "EULA") governs your use of CheckLynx, a hosted service from Chain Interlynx, LLC ("ChainInterLynx," "we," "us") that prints checks from QuickBooks Online on blank check stock (the "Service"). It supplements our Terms of Service. By connecting a QuickBooks Online company to the Service or using it, you agree to this EULA on behalf of that company ("you").
1. License
Subject to this EULA and payment of any applicable subscription fee, we grant you a limited, non-exclusive, non-transferable, revocable right during your trial or subscription to access and use the Service for the internal business purposes of each company you connect. Each subscription covers one QuickBooks Online company.
2. Your Responsibilities for Checks
The Service prints what you instruct it to print. You are solely responsible for:
- Authority. Having legal authority to issue checks on every bank account you set up in the Service.
- Account details. Entering the correct routing number, account number, and starting check number. Copy them from a check your bank printed, and confirm them with your bank.
- Test prints. Printing the alignment test page and a sample check, and confirming with your bank that your checks are acceptable, before issuing live checks, and again after changing printers, toner, or check stock.
- Equipment and supplies. Printing on blank check stock with appropriate security features, using a laser printer in good working order. MICR (magnetic ink character recognition) toner is the banking-industry standard for check printing and is recommended. Some financial institutions will process checks printed with standard toner; however, acceptance of such checks is at the sole discretion of the receiving institution and is not guaranteed.
- Review. Reviewing every check for payee, amount, date, and signature before it leaves your control, and keeping your check stock, printers, and signature image secure.
- Fraud controls. Maintaining the controls your bank offers (such as Positive Pay) and reconciling your accounts.
3. No Guarantee of Bank Acceptance
The Service prints the MICR line to the published E-13B specifications. However, acceptance of a check depends on your bank, your equipment, toner, paper, and printer settings, none of which we control. We do not guarantee that any check will be accepted, read, or processed by any bank, and we are not responsible for returned, rejected, delayed, or misread items, or for related fees.
4. QuickBooks Online Data
When you connect a company, you authorize the Service to read the data needed to print checks (such as company information, bank accounts, vendors, bills, checks, and bill payments marked to print) and to write back the check number and printed status after you confirm a print run. We use QuickBooks data only to provide the Service to you, never sell it, and handle it as described in our Privacy Policy. You may disconnect at any time from the Service's settings or from within QuickBooks.
5. Bank Information and Signatures
Routing and account numbers and OAuth credentials are stored encrypted. If you upload a signature image, you confirm you are authorized to use it and you accept responsibility for checks printed with it.
6. Restrictions
You will not use the Service to create checks you are not authorized to issue, to imitate another person's checks or bank, or for any unlawful purpose; share access with anyone outside your organization; or attempt to copy, resell, or reverse engineer the Service.
7. Fees
Fees, trials, renewal, and cancellation are described in the Terms of Service. If your trial ends or a payment fails, printing is paused until your subscription is active; your settings are kept.
8. Termination and Your Data
You may stop using the Service at any time. We may suspend or terminate access as provided in the Terms. After you disconnect QuickBooks or your subscription ends, you may ask us to delete your stored data (bank details, settings, signature image, and print history) and we will do so within 30 days, except for records we must keep by law. Checks already recorded in QuickBooks remain in your QuickBooks company.
9. Disclaimers and Limitation of Liability
The disclaimers and limitations of liability in the Terms of Service apply to the Service. Without limiting them, ChainInterLynx is not liable for losses arising from checks that are misprinted, duplicated, altered, forged, stolen, or fraudulently issued, or from incorrect bank or check information you entered.
10. Intuit
QuickBooks and Intuit are trademarks of Intuit Inc. The Service is an independent product of Chain Interlynx, LLC and is not affiliated with, endorsed by, or sponsored by Intuit Inc. Intuit is not a party to this EULA and has no responsibility for the Service.
11. Governing Law; Contact
This EULA is governed by the laws of the State of Louisiana, as provided in the Terms of Service.
Chain Interlynx, LLC
Email: support@chaininterlynx.com
Website: chaininterlynx.com