Offer setup before anything syncs
TaxJar receives cleaner data when the offer, product, price, checkout mode, invoice, and automation path are defined first.
App integrations
tax
Connect TaxJar to the platforms you already sell with
Use Plandalf to connect TaxJar with checkout pages, payment flows, email tools, CRM records, access systems, tax engines, and webhooks.
Popular connections
TaxJar works with…
Use these as practical recipes, not just directory entries. Each one should explain the checkout, automation, payment, email, CRM, tax, or API handoff that matters.
TaxJar + PayPal
Score 98
Calculate tax with TaxJar before charging through PayPal.
TaxJar + Stripe
Score 90
Calculate tax with TaxJar before charging through Stripe.
TaxJar + Avalara
Score 42
Use TaxJar and Avalara together in a Plandalf checkout and post-purchase workflow.
TaxJar + Drip
Score 37
Use TaxJar and Drip together in a Plandalf checkout and post-purchase workflow.
TaxJar + HubSpot
Score 37
Use TaxJar and HubSpot together in a Plandalf checkout and post-purchase workflow.
TaxJar + Kit (ConvertKit)
Score 37
Use TaxJar and Kit (ConvertKit) together in a Plandalf checkout and post-purchase workflow.
TaxJar + Klaviyo
Score 37
Use TaxJar and Klaviyo together in a Plandalf checkout and post-purchase workflow.
TaxJar + Mailchimp
Score 37
Use TaxJar and Mailchimp together in a Plandalf checkout and post-purchase workflow.
TaxJar + Next.js
Score 37
Use TaxJar and Next.js together in a Plandalf checkout and post-purchase workflow.
TaxJar + Shopify
Score 37
Use TaxJar and Shopify together in a Plandalf checkout and post-purchase workflow.
TaxJar + Webflow
Score 37
Use TaxJar and Webflow together in a Plandalf checkout and post-purchase workflow.
TaxJar + WordPress
Score 37
Use TaxJar and WordPress together in a Plandalf checkout and post-purchase workflow.
How it works
Plandalf is the commerce layer between apps
TaxJar keeps doing what it is best at. Plandalf handles the offer, checkout, buyer fields, payment context, invoice data, and post-purchase events that every other app needs.
US-and-Canada-focused sales tax automation. Connect with an API token from your TaxJar dashboard. We compute tax on every checkout in your covered jurisdictions, push transactions back for filing, and cache exempt-customer rules per org.
Search paths
Pages this hub can feed
Product surfaces to check before wiring TaxJar
A useful TaxJar integration page should show where the operator configures Offers, payment options, invoices, Automations, integrations, and API settings before a developer ships the flow.
Recipes to keep open while building
TaxJar can be part of a payment stack, a site stack, a marketing stack, or an automation stack. These Plandalf resources keep the implementation tied to real checkout and purchase events.
Checkout completed fulfilment Route product, buyer, invoice, and payment state after purchase. Purchase event webhook fanout Send one purchase event into multiple downstream tools. API-first commerce stack Use SDK checkout, API keys, webhooks, and operator-visible settings together. TaxJar platform overview See the supported roles, setup patterns, and product surfaces for TaxJar.