Nexio handles nexus tracking, filing calendars, exemption certificates, and B2B & B2C tax calculations across all 50 states. We prepare and file your returns — you just approve them.
From your first nexus alert to your hundredth filing — all in one tool.
Accurate B2B and B2C calculations across all 50 states with SaaS sourcing rules, product taxability overrides, and real-time rate lookups.
Monitor economic nexus thresholds in real time. Get alerted the moment you approach or exceed registration requirements in any state.
Automated due-date tracking per state with email reminders, .ics calendar export, and direct links to every state's filing portal.
Track customer exemption certificates, expiration dates, and certificate types. Export your full exemption register to CSV with one click.
Automatically detect your customer's location at checkout and apply the exact tax rate — no manual address entry required.
Connect Stripe, Square, PayPal, Shopify, WooCommerce, and more. Import transactions directly or via flexible CSV column mapping.
Create tax-compliant invoices with accurate rates pre-filled. Export to PDF or share directly. Supports multi-jurisdiction transactions.
One-click audit-ready reports with full transaction history, tax breakdowns by state, and summaries your accountant can use immediately.
Separate Admin and User roles built in. Give teammates calculator and invoice access without exposing your nexus and filing controls.
No servers to spin up. No complex integrations. Nexio runs entirely in your browser.
Link your Stripe, Square, or PayPal account — or import a CSV. Nexio maps your transaction history automatically.
Nexio identifies which states you have nexus in, calculates accurate tax per transaction, and flags any compliance gaps in real time.
Follow your filing calendar, download state-ready packages, and keep exemption certificates current — all from one dashboard.
TaxJar, Avalara, and Stripe Tax apply a blanket rate to your full invoice total. Nexio analyzes exactly where each sale took place — and charges only the tax the law actually requires.
Scenario: Your SaaS company is based in Texas. A B2B customer in Oregon purchases a $5,000/year subscription.
We identify where your customer's transaction actually originated using IP geolocation — not their billing address, which is often a corporate HQ rather than the real point of sale.
Every state has different sourcing rules: some tax based on where the seller is (origin), others where the buyer is (destination). Nexio applies the correct rule per state — competitors pick one and apply it everywhere.
SaaS is exempt from sales tax in 12+ states and only partially taxable in several more. Nexio knows exact SaaS taxability rules in every jurisdiction and applies $0 where the law permits.
B2B sales with valid exemption certificates are zero-tax events. Nexio stores every certificate and auto-applies it so you never collect tax from a business customer who legally shouldn't be paying it.
When you charge only what the law requires, your effective price is lower than competitors using Avalara or TaxJar. On a $50K contract that can mean thousands of dollars — a real edge in a close deal.
Collecting more tax than required creates audit exposure — states can demand refunds with interest. Nexio's precision keeps you exactly compliant: not over-charging customers, not over-remitting to states.
No monthly subscription. No hidden fees. A simple one-time setup per state, then a flat rate every time we file.
We implement automatic customer location detection using their IP address — so the right tax rate is applied at checkout with zero friction. Includes SDK integration, geolocation provider setup, fallback logic, and testing across your checkout flow. No address form required.
"We were tracking nexus in a spreadsheet before Nexio. Now everything — alerts, filing reminders, exemption certificates — lives in one place. It's been a huge weight off our shoulders."
"The IP geolocation feature is genuinely brilliant. We detect the customer's location at checkout and apply the right tax automatically — no manual address fields, no friction, no errors."
"Quarterly filing used to take a full day. Now I export the filing package and send it to my accountant in under an hour. The audit export is exactly the format they need — nothing to reformat."
Book a 30-minute demo and see Nexio in action — no commitment required.