TAX AUTOMATION

Sales Tax That's Simple at Checkout — and Scalable When You Grow

Parts Square can calculate and collect sales tax out of the box. When you need more automation, we connect to leading tax platforms to pull precise rates and streamline reporting and filing.

Talk to an Integration Specialist See Supported Platforms
Integrated Tax Platforms
Avalara Avalara
TaxJar TaxJar
Stripe Tax Stripe Tax
QuickBooks QuickBooks
Built-in Manual Rates

Set tax rules by state/province for simple, immediate tax collection

Automated Lookup

Connect to tax platforms for real-time state, county, and local rate calculation

Filing Workflows

Streamline reporting and filing with supported tax automation tools

BUILT-IN CAPABILITY

Built-in Tax Settings (Works Immediately)

Parts Square includes a simple, practical tax screen where you can set tax rules by state and province

Perfect for straightforward tax scenarios

This built-in approach is ideal if you:

Single State/Province Focus

You primarily sell in one state or province and the rate is straightforward

Know Your Rates

You already know your rates and want a straightforward setup without complexity

Testing Your Market

You're validating your market before investing in a tax automation platform

Collect Tax Automatically at Checkout

Taxes are calculated and shown during checkout and included on the order — no surprises, no manual work.

Subtotal $459.95
Shipping $15.00
Tax (CA 7.25%) $33.35
Total $508.30
GROWTH STAGE

When Automation Becomes Worth It

As you expand, sales tax gets complicated fast — not just state-by-state, but by county, city, and special district

Multi-State Sales

You're selling into many states and manually tracking rates is becoming a burden

Economic Nexus Thresholds

Your sales volume is crossing state thresholds that trigger tax collection obligations

Exemption Handling & Compliance

You need exemption certificates, better reporting, and automated filing workflows

Rule of thumb: If you're collecting tax in 3+ states or your monthly sales exceed $100K in any state, tax automation typically pays for itself.

What is "Nexus"?

Sales tax nexus is the connection between your business and a state that creates an obligation to collect and remit sales tax in that state.

Physical Nexus

"You store inventory in a warehouse in State A → likely nexus in that state"

Economic Nexus

"You ship enough orders into State B → may trigger economic nexus threshold"

Pro tip: Most states have economic nexus thresholds around $100K in sales or 200 transactions per year. Tax platforms can help you monitor these automatically.

TURNKEY EXPERIENCE

How Tax Automation Integrates with Parts Square

When you enable a tax platform, Parts Square uses it to calculate tax in real time — no manual rate maintenance required

Real-Time Calculation

Tax is calculated at checkout using the customer's ship-to address for accurate jurisdiction-level rates

Precise Jurisdiction Logic

Apply more precise jurisdiction logic than simple state-level rules — including county, city, and special district rates

Channel Consistency

Keep tax calculations consistent across your website, marketplaces, and other sales channels

The "Turnkey" Experience

Taxes show during shipping preview and checkout automatically, without manual rate maintenance. Your tax platform does the calculation, Parts Square displays it seamlessly.

TAX PLATFORMS

Supported Sales Tax Platforms

Choose the level of automation you need — from real-time calculation to reporting and filing workflows

Avalara
Avalara
TaxJar
TaxJar
Stripe Tax
Stripe Tax
QuickBooks
QuickBooks

Don't see your provider? We can integrate via API or exports.

Avalara

Avalara

  • Real-time tax calculation and compliance tooling (AvaTax)
  • Returns automation can ingest transaction data and file per schedule (Returns)
  • Good fit for: Multi-state complexity and bigger footprints
TaxJar

TaxJar

  • Sales tax calculation API + reporting
  • AutoFile can submit returns/remittances in enrolled states
  • Good fit for: Ecommerce teams that want "set it and forget it" filing
Stripe Tax

Stripe Tax

  • Calculates and collects sales tax/VAT/GST
  • Supports compliance workflows with reporting and filing partner options
  • Good fit for: Teams already standardized on Stripe for payments
QuickBooks

QuickBooks

  • QuickBooks Online supports automated sales tax calculation
  • Based on what/where you sell and ship
  • Good fit for: Teams that want tax calculation tightly connected to bookkeeping

Important: Filing automation varies by tool and plan. All platforms listed support real-time calculation; filing workflows depend on your provider subscription and enrolled states.

CUSTOMER EXPERIENCE

What Your Customers See

Customers see tax calculated right inside checkout — clearly, consistently, and automatically

Transparent, friction-free checkout

Automated tax calculation reduces:

Manual tax maintenance
No more updating rate tables when jurisdictions change
Checkout friction
Tax displays immediately as customers enter shipping info
"Why is my total different?" surprises
Clear breakdown prevents abandoned carts at the last step
Order Summary
Subtotal $1,249.95
Shipping FREE $0.00
Sales Tax
Los Angeles, CA (9.5%)
$118.75
Total $1,368.70
REPORTING

Clean Records for Reporting and Returns

Whether you use built-in rates or a tax platform, Parts Square keeps order records consistent

Reconcile Tax Totals

See exactly how much tax you've collected, by jurisdiction and time period

Export Reports

Export transaction data by state, date range, or custom filters for your accountant

Audit-Ready Data

Support your tax provider or accountant with clean, organized transaction records

Simplify Sales Tax From Day One

Whether you're starting with simple state rates or need full multi-state automation with Avalara or TaxJar, Parts Square makes tax collection seamless. Let's talk about your tax requirements and build the right solution for your business.

Talk to an Auto Parts Ecommerce Expert

Tell us where your business is today and where you want it to go. We’ll show you how Parts Square can connect your vendors, catalog data, and storefront into one system.

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Simple Pricing for serious sellers
Starting at $745 USD /mo
+ 2% of sales · No hidden fees
Volume discounts available
1
Book a Demo We’ll review your business and schedule a quick call to walk you through the Parts Square platform.
2
Get Your Custom Plan We’ll map out your vendors, data sources, and launch timeline so you know exactly what’s involved.
3
Launch in as little as 30 days Done-for-you setup and onboarding with dedicated support.
Done-for-you onboarding & data migration
2,000+ brands pre-integrated
Connect to major warehouse distributors
Clear, transparent terms
QUESTIONS & ANSWERS

Frequently Asked Questions

Everything you need to know about sales tax with Parts Square

Do I need sales tax software if I only sell in one state?
Not necessarily. If you primarily sell in one state and the tax rate is straightforward, Parts Square's built-in tax settings are usually sufficient. You can manually set your state rate and have it automatically applied at checkout. However, if you're selling to multiple counties or cities within that state with different rates, or if you're approaching economic nexus thresholds in other states, a tax automation platform can save you significant time and reduce compliance risk.
What's the difference between state tax and local tax?
State tax is the sales tax rate set by the state government, while local tax includes additional rates imposed by counties, cities, and special districts (like transportation or transit authorities). For example, California's state sales tax might be 7.25%, but when you add local rates for a specific city or county, the total combined rate could be 9.5% or higher. Tax automation platforms calculate these combined rates automatically based on the customer's exact shipping address.
Will taxes calculate automatically at checkout?
Yes! Whether you use Parts Square's built-in tax settings or connect to a tax automation platform, sales tax is calculated and displayed automatically during checkout based on the customer's shipping address. The tax amount is clearly shown in the order summary before the customer completes their purchase — no surprises, no manual calculation needed.
What is nexus and when does it matter?
Nexus is a legal term that means your business has a sufficient connection to a state that requires you to collect and remit sales tax there. Nexus can be created through physical presence (like a warehouse, office, or employees) or economic activity (typically $100K in sales or 200 transactions per year in a state). It matters because once you have nexus in a state, you're legally required to collect sales tax from customers in that state. Tax automation platforms can help you monitor when you're approaching these thresholds and ensure you're collecting tax appropriately.
Can Parts Square work with my existing tax provider?
Yes! Parts Square can integrate with tax automation platforms via API for real-time rate calculation, or we can export transaction data in formats your tax provider can import. We support direct integrations with Avalara, TaxJar, Stripe Tax, and QuickBooks, and we can work with other providers through file-based workflows or custom API connections. If you're already using a tax platform, we'll design the integration to fit your existing workflow.