Terms & Conditions

By installing, accessing, or using Nexus Tax Exemptions ("the App") through the Wix App Market, you ("Merchant" or "User") agree to be bound by these Terms and Conditions ("Terms"). If you do not agree to these Terms, do not install or use the App.

These Terms constitute a legally binding agreement between you and Nexus Tax Exemptions ("Nexus", "we", "us", or "our"). Your continued use of the App following any updates to these Terms constitutes acceptance of the revised Terms.

Nexus is a Wix-native application and operates subject to the Wix App Market Developer Agreement and Wix's platform policies, in addition to these Terms.

Nexus Tax Exemptions provides the following services to Wix merchants:

• Certificate Management: Tools enabling B2B buyers and exempt organizations to upload, store, and manage tax exemption certificates (PDF and image formats) within the Wix storefront.

• Tax Calculation: Automated, line-item-aware tax exemption calculation at checkout, including a configurable fallback tax rate to ensure uninterrupted checkout completion.

• Team-Based Exemption Sharing: The ability for buyers to invite team members via email so that a shared exemption status applies consistently across an organization's purchasing team.

• Nexus & US Tax Region Management: Tools for merchants to declare state nexus and create or reconcile Wix e-commerce tax regions across US states.

• Merchant Dashboard: A configuration interface for managing default tax rates, business branding, setup checklist, and optional advanced tax engine credentials.

• Notifications: Branded transactional email notifications for certificate events, team invitations, and expiration reminders.

We reserve the right to modify, suspend, or discontinue any aspect of the Services at any time with reasonable notice.

To use Nexus Tax Exemptions, you must:

• Be a registered Wix merchant with an active Wix Stores subscription.

• Have the authority to bind your business to these Terms.

• Be located in the United States or operate a Wix store that sells to US-based customers.

• Maintain a valid payment method for applicable subscription fees.

You are responsible for maintaining the confidentiality of your account credentials and for all activities that occur under your account. You agree to notify us immediately at hello@nexus.com of any unauthorized use of your account.

Nexus reserves the right to refuse service, terminate accounts, or cancel subscriptions at our discretion, including for violation of these Terms.

Data We Access

Nexus accesses the following Wix data through official Wix OAuth 2.0 authentication, with your explicit consent:

• Store orders and transaction data (to apply exemptions)

• Customer and site member data (to associate certificates with buyers)

• E-commerce catalog data (for line-item tax calculations)

Data We Store

• Tax exemption certificates (PDF/image files) uploaded by your buyers

• Certificate metadata: type, issuing state, expiration date, validation status

• Team membership records for shared exemption access

• Merchant configuration settings including fallback tax rates and branding

Data Security

We implement industry-standard security measures including TLS encryption in transit, AES-256 encryption at rest, and access controls. Nexus is SOC 2 certified, GDPR compliant, and PCI DSS aligned.

Data Retention

We retain your data for the duration of your subscription plus 90 days following cancellation, after which it is permanently deleted. You may request earlier deletion by contacting hello@nexus.com.

Third-Party Tax Engines

If you configure optional third-party tax engine credentials, those credentials are encrypted at rest and used solely to authenticate tax calculation requests on your behalf. We do not share your credentials with any other parties.

Your full Privacy Policy governs data handling and is available at nexus.com/privacy.

As a merchant using Nexus Tax Exemptions, you are solely responsible for:

• Certificate Validity: Ensuring that exemption certificates accepted from your buyers are valid, complete, and legally sufficient for the applicable jurisdiction. Nexus provides tools to assist with validation but does not provide legal or tax advice.

• Tax Compliance: Determining your sales tax obligations, nexus thresholds, and applicable exemption rules in each state where you operate. Nexus facilitates your workflow but is not a substitute for qualified tax counsel.

• Buyer Verification: Verifying the identity and eligibility of buyers submitting exemption certificates, particularly for high-value transactions.

• Recordkeeping: Maintaining adequate records of exemption certificates in accordance with applicable state tax laws. Most states require certificates to be retained for a minimum of 4–7 years.

• Nexus Declarations: Accurately declaring the states in which you have sales tax nexus. Incorrect nexus declarations may result in under-collection of tax and associated penalties.

• Timely Renewals: Monitoring certificate expiration dates and ensuring buyers renew certificates before they expire.

You acknowledge that tax laws vary by jurisdiction and change frequently. We recommend consulting a qualified tax professional for advice specific to your business.

You agree not to use Nexus Tax Exemptions to:

• Accept, store, or process fraudulent, forged, or invalid exemption certificates.

• Facilitate tax evasion or any illegal avoidance of sales tax obligations.

• Reverse engineer, decompile, or attempt to extract the source code of the App.

• Use the App in a manner that violates Wix's Terms of Service or App Market policies.

• Transmit malicious code, spam, or conduct denial-of-service attacks through the App.

• Resell, sublicense, or otherwise transfer your rights to use the App to third parties without our written consent.

• Use the App in connection with any unlawful, harmful, or fraudulent activity.

• Scrape or harvest data from the App beyond normal use.

Violations of this section may result in immediate termination of your account without refund.

Subscription Plans

Nexus offers Starter, Growth, and Enterprise plans as described on our pricing page. Prices are displayed in USD and are subject to change with 30 days' notice.

Free Trial

All plans include a 14-day free trial with no credit card required. After the trial period, continued use requires a paid subscription.

Billing Cycle

Subscriptions are billed monthly or annually, as selected at sign-up. Annual subscriptions are billed in full at the start of each billing year.

Payment Processing

Payments are processed securely through the Wix App Market billing system. We do not directly store your payment card information.

Refunds

Monthly subscriptions are non-refundable once the billing period has commenced. Annual subscriptions may be eligible for a pro-rated refund within 30 days of purchase if you have not materially used the service.

Cancellation

You may cancel your subscription at any time through your Wix dashboard (Apps → Manage Apps → Nexus Tax Exemptions → Cancel). Cancellation takes effect at the end of the current billing period. Your data remains accessible until the end of the paid period.

Downgrade & Upgrade

Plan changes take effect immediately. Upgrades are prorated; downgrades take effect at the next billing cycle.

Our IP

The App, including its software, algorithms, design, branding, and documentation, is owned by Nexus Tax Exemptions and protected by copyright, trademark, and other intellectual property laws. These Terms do not transfer any ownership interest to you.

Your Data

You retain ownership of all data you upload to the App, including exemption certificates, merchant configurations, and buyer information. By using the App, you grant us a limited, non-exclusive license to process and store that data solely to provide the Services.

Feedback

Any feedback, suggestions, or ideas you provide regarding the App may be used by us without restriction or compensation to you.

Wix Platform

Wix is a registered trademark of Wix.com Ltd. Nexus is an independent developer and is not affiliated with, endorsed by, or sponsored by Wix.com Ltd.

No Tax or Legal Advice

Nexus Tax Exemptions is a software tool, not a tax advisor. Nothing in the App or these Terms constitutes legal, tax, or accounting advice. You should consult qualified professionals for advice specific to your circumstances.

No Guarantee of Accuracy

While we strive for accuracy in tax calculations, Nexus does not warrant that tax calculations, nexus information, or state coverage data are free of errors or current with the latest regulatory changes.

Disclaimer of Warranties

THE APP IS PROVIDED "AS IS" WITHOUT WARRANTIES OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.

Limitation of Liability

TO THE MAXIMUM EXTENT PERMITTED BY LAW, NEXUS SHALL NOT BE LIABLE FOR ANY INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR PUNITIVE DAMAGES, OR ANY LOSS OF REVENUE, PROFITS, DATA, OR BUSINESS GOODWILL ARISING FROM YOUR USE OF THE APP. OUR TOTAL LIABILITY TO YOU SHALL NOT EXCEED THE AMOUNT YOU PAID TO US IN THE 12 MONTHS PRECEDING THE CLAIM.

Indemnification

You agree to indemnify and hold harmless Nexus and its officers, directors, employees, and agents from any claims, damages, or expenses (including reasonable attorneys' fees) arising from your use of the App, your violation of these Terms, or your violation of any applicable law.

These Terms are governed by and construed in accordance with the laws of the State of California, without regard to its conflict of law provisions.

Dispute Resolution

Before initiating formal proceedings, you agree to contact us at hello@nexus.com to attempt informal resolution. Most concerns can be resolved quickly.

Arbitration

Any dispute that cannot be resolved informally shall be submitted to binding arbitration administered by JAMS under its Commercial Arbitration Rules, in San Francisco, California. Arbitration shall be conducted on an individual basis — class actions are not permitted.

Exceptions

Either party may seek injunctive or other equitable relief in a court of competent jurisdiction for matters involving intellectual property or unauthorized access.

We may update these Terms from time to time. When we do, we will:

• Update the "Last Updated" date at the top of this page.

• Send an email notification to registered merchants at least 14 days before material changes take effect.

• Display an in-app notice in your Nexus dashboard.

Your continued use of the App after changes take effect constitutes your acceptance of the revised Terms. If you do not agree to the revised Terms, you must cancel your subscription and discontinue use of the App.

If you have questions about these Terms, please contact us:

Email: hello@nexus.com

Phone: 1-800-NEXUS-TAX

Mail: Nexus Tax Exemptions, 123 Market Street, San Francisco, CA 94105

For urgent compliance matters or data deletion requests, email legal@nexus.com with the subject line "Legal Request".

We aim to respond to all inquiries within 2 business days.