Does BigCommerce automatically calculate and file sales tax?

No on both. BigCommerce has no native tax calculation—you must integrate third-party providers or manually configure rates for every jurisdiction. BigCommerce also doesn't file returns—you manually log into state portals monthly or quarterly. Galvix provides complete automation: accurate calculations plus expert-prepared returns filed on your behalf at $75 per state.

What are BigCommerce's native sales tax features?

Very limited. Manual tax rate configuration where you enter percentages for each jurisdiction, a Tax Exempt Code field for marking customers exempt, and a 10% fallback rate if integrations fail. No automated calculation, no filing, no nexus tracking, no certificate management. BigCommerce requires third-party providers for full tax automation.

How much does Avalara cost for BigCommerce?

Avalara typically costs $600-1,200+ per month with custom pricing, plus $349 per state registration and mandatory setup fees. Managed filing costs extra. Long-term contracts are often required for discounts. Galvix costs $75 per return filed with no platform fees, no subscriptions, no setup fees. Example: 8 states = $600/month total.

How do I set up sales tax exemption certificates in BigCommerce?

BigCommerce has a basic 'Tax Exempt Code' field in customer profiles where you manually enter exemption codes. No certificate collection, validation, storage, or expiration tracking. For full exemption management, you need third-party apps. Galvix includes complete certificate management: self-service customer portal, automated validation and storage, expiration tracking with renewal reminders, and an audit-ready repository.

What happens during a sales tax audit if I use BigCommerce?

BigCommerce provides transaction reports but no expert support during audits. You must respond to the state alone or hire an accountant separately. Galvix provides comprehensive audit support: we provide detailed reports, calculations, and transaction documentation. Our team helps you understand audit requests and prepares response packages.

Does Galvix provide real-time tax calculation for BigCommerce?

Yes. Galvix automatically applies accurate tax calculations to every BigCommerce order with rooftop-level accuracy across all U.S. jurisdictions. Rates stay current with monthly updates—no manual work required. We also handle multi-channel nexus tracking with alerts, expert-prepared returns, state registrations, exemption management, and audit support.

How long does Galvix setup take for BigCommerce users?

2-7 business days typically. We connect the BigCommerce API during your onboarding call, configure tax settings and product taxability using AI assistance, sync historical data for nexus analysis across all your sales channels, update your nexus states and registration status, then activate accurate tax determination. Our team guides you through the entire process.

Can I use Galvix if I sell through BigCommerce and other channels?

Yes—this is where Galvix really helps. We monitor sales across BigCommerce, Amazon, Shopify, and any other channels you use for accurate multi-channel nexus tracking and consolidated filing. Third-party providers only track transactions processed through their platforms, creating blind spots for multi-channel sellers. Galvix gives you complete visibility with proactive alerts before you establish nexus in new states.

How much does Galvix cost for BigCommerce stores?

Simple pricing: $75 per state return filed. No platform fees, no subscriptions, no setup fees. Example: Filing in 8 states monthly = $600/month total. State registrations are $150 per state, done-for-you. Transparent, predictable pricing with no hidden fees or year-long contracts.

BigCommerce vs Galvix: Which should I use?

BigCommerce is your e-commerce platform—you need it to run your online store. Galvix is your sales tax compliance solution. Since BigCommerce has no native tax calculation or filing, you must choose a tax solution. Use Galvix if you want expert-prepared returns, transparent pricing, multi-channel nexus tracking, done-for-you registrations, and audit support with real humans.

Is Galvix cheaper than Avalara for BigCommerce stores?

Yes, significantly. Avalara typically costs $600-1,200+ per month with setup fees and $349 per state registration. Galvix has no platform fees—just $75 per return filed and $150 per state registration. Example: Filing in 8 states monthly = $600/month total with Galvix. That's substantial savings while getting expert-prepared filing and better support.

Is Galvix cheaper than TaxJar for BigCommerce stores?

Yes, especially for comprehensive filing. TaxJar has tiered pricing based on order volume, with filing included for some plans but costing extra beyond plan limits. Galvix is $75 per return filed with expert-prepared returns and hands-on support. More comprehensive for similar or lower total cost.

Can Galvix replace Avalara or TaxJar on my BigCommerce store?

Yes. Galvix provides everything third-party providers do—real-time tax calculation, nexus tracking, exemption management—plus expert-prepared returns, done-for-you registrations, and comprehensive audit support at lower cost. Switching takes 2-7 days with our team's guided onboarding. Many BigCommerce merchants switch to Galvix for transparent pricing, expert-assisted filing, and fast support.

BigCommerce + Galvix Integration

BigCommerce Sales Tax Automation | Expert-Prepared Filing

Last updated: February 2026 • 8 min read

Galvix provides complete sales tax automation for BigCommerce stores—from accurate tax calculation to expert-prepared returns across all 50 states. Our tax specialists handle calculations, nexus tracking, state registrations, and filing on your behalf. Pay only $75 per return filed with no platform fees.

View Pricing Book a Demo

Trusted by 50+ businesses • 15-day money back guarantee

Why BigCommerce Needs External Tax Management

While BigCommerce is a powerful platform, its native sales tax features fall short of what growing businesses need.

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No Native Tax Calculation Functionality

BigCommerce has no built-in tax calculation. You must integrate third-party providers from day one or manually configure rates for every jurisdiction with ongoing updates. Manual setup is time-consuming and error-prone for multi-state sellers.

📋

No Automated Filing or Remittance

BigCommerce doesn't file sales tax returns. Filing manually across multiple states typically takes 30-60 minutes per state per month—quickly adding up to 5-10 hours monthly for merchants in 10 states, with constant risk of missed deadlines and penalties.

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No Nexus Tracking or Threshold Alerts

BigCommerce has no nexus tracking. You must manually monitor when you cross thresholds in each state. Third-party providers offer nexus tracking, but only for transactions processed through their platforms—not multi-channel sales from Amazon or other marketplaces.

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Manual State Registrations

When you establish nexus in a new state, BigCommerce offers no help with registration. You navigate each state's portal yourself, complete forms, and wait weeks for permits.

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No Exemption Certificate Management

BigCommerce has a basic 'Tax Exempt Code' field only—no certificate collection, validation, or storage. Managing exemption certificates manually creates compliance risk and requires third-party apps for full functionality.

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No Audit Support or Expert Guidance

When states audit, you're on your own. BigCommerce provides transaction reports but no expert support to help you respond to inquiries or defend discrepancies.

How Galvix Solves BigCommerce's Tax Challenges

Galvix fills the gaps with a modern, fully-automated tax solution purpose-built to complement BigCommerce.

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Accurate Real-Time Tax Calculation

Galvix provides accurate real-time tax calculation across all U.S. jurisdictions. Rates update monthly with no manual configuration. Seamless integration with BigCommerce ensures correct tax amounts on every order.

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Expert-Prepared Returns Filed on Your Behalf

Our tax specialists prepare your returns using data from BigCommerce and all your other sales channels. You review and approve in the Galvix dashboard, then we file on your behalf. Accuracy guaranteed. Expert-assisted from start to finish.

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Multi-Channel Nexus Tracking with Proactive Alerts

We monitor sales across BigCommerce, Amazon, and all your other channels. Get proactive alerts when you're approaching nexus thresholds in new states, giving you time to register before obligations are triggered. BigCommerce has no nexus tracking, and third-party providers only track transactions processed through their platforms, creating blind spots for multi-channel sellers.

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Done-For-You State Registrations

For $150 per state, our team handles the entire registration process from application to permit receipt. We manage complex states with local requirements and typically deliver permits within 2-3 weeks.

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Exemption Certificate Management

Galvix includes full certificate management: customers upload certificates via self-service portal, we validate and store them, apply exemptions automatically, track expirations with renewal reminders, and maintain an audit-ready repository. No third-party apps needed.

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Audit Documentation Support with Expert Guidance

Our team provides comprehensive reports, calculations, and transaction documentation during audits. We help you understand state inquiries and prepare response packages with the data you need. Fast email/chat support with tax specialists—hands-on configuration assistance during onboarding and ongoing support for complex scenarios.

How It Works

Get set up quickly with guided onboarding, then let Galvix handle tax calculations, rate updates, and return filings.

Connect Your BigCommerce Store

Install the Galvix app from the BigCommerce app store with a few clicks. No developer required. Join an onboarding call with our team to configure settings.

5 minutes

Automated Setup & Configuration

We sync your historical transaction data and use AI to assign tax codes to products. Our team confirms nexus states based on your multi-channel sales history and updates registration status. Accurate tax determination goes live.

2-7 business days

Ongoing Compliance Automation

Galvix automatically applies correct tax calculations to every BigCommerce order. We monitor sales across all your channels with proactive nexus alerts. Each month, our tax specialists prepare returns—you review and approve in the Galvix dashboard, we file on your behalf and upload acknowledgments.

Monthly

Our Customers

Accountants and business owners who have switched to Galvix

How Galvix Compares

See how Galvix stacks up against BigCommerce's native tools and competitors like Avalara.

Feature	Galvix	BigCommerce Native	Avalara AvaTax
Real-Time Tax Calculation	✅ Rooftop-level	❌ No (requires third-party)	✅ Rooftop-level
Filing Service	✅ Expert-prepared, all 50 states ($75/state)	❌ No filing support	⚠️ Self-service or managed ($$)
Nexus Tracking	✅ Multi-channel with alerts	❌ No tracking	⚠️ Single-channel only
Multi-Channel Support	✅ All sales channels	❌ BigCommerce only	⚠️ Limited to provider transactions
State Registrations	✅ $150/state (done-for-you)	❌ No assistance	💰 $349/state
Exemption Management	✅ Portal with expiration tracking	⚠️ Basic code field only	✅ Via ECM add-on ($$)
Audit Documentation	✅ Reports + expert guidance	⚠️ Transaction reports only	⚠️ Varies by plan
Expert Human Support	✅ Fast email/chat with tax specialists	⚠️ Generic store support	⚠️ Ticket-based
Setup Complexity	🟢 Low (2-7 days, guided)	🟡 Medium (manual config)	🟡 Medium (self-service)
Pricing	✅ $75/return, no base fee	Included in store ($39-399/mo)	❌ Contact sales ($600-1,200+/mo + setup fees)
Contract Terms	✅ No contracts, pay as you go	Monthly store subscription	⚠️ Often requires long-term contracts

FAQs

Common Questions About BigCommerce Sales Tax

General BigCommerce Tax

Galvix Integration

Comparison

Ready to Automate BigCommerce Sales Tax?

Since BigCommerce has no native tax calculation, you need a complete solution. Galvix provides accurate calculations, expert-prepared returns, and multi-channel nexus tracking—all in one platform.

Accurate Real-Time Tax Calculation

Apply correct rates on every order across all U.S. jurisdictions

Multi-Channel Nexus Tracking

Monitor BigCommerce + Amazon + other channels with proactive alerts

Expert-Prepared, Auto-Filed Returns

Tax specialists prepare returns—you review, we file. $75/state.

View Pricing Book a Demo

Join 50+ BigCommerce merchants who trust Galvix for complete sales tax compliance