Skip to main content
NorthlineAdvisory

Services

Sales Tax & VAT-style Compliance

Nexus studies, registrations and monthly filings across every state where you sell, plus VAT support for cross-border sales.

Book a free consultation

Starting at $450/mo

Overview

Since the Wayfair decision, any company selling into multiple states can owe sales tax far from home. With more than 11,000 taxing jurisdictions in the U.S., and VAT or GST obligations when you sell abroad, compliance is now an operational process, not a once-a-year task.

We map your economic nexus, register you where required and file accurate returns on time, every period. Our team integrates with Shopify, Stripe, Amazon and Avalara or TaxJar so the numbers reconcile to your books automatically.

What's included

  • Economic and physical nexus study across all 50 states
  • State sales tax registrations and permit management
  • Monthly, quarterly and annual sales tax returns
  • Exemption certificate collection and tracking
  • Voluntary disclosure agreements for past exposure
  • VAT / GST registration guidance for EU, UK and Canada sales
  • Integration with Shopify, Stripe, Avalara and TaxJar

How it works

  1. Step 1

    Nexus study

    We analyze sales by state and product taxability to see where you owe and since when.

  2. Step 2

    Remediation

    Registrations, voluntary disclosures and back filings where exposure exists.

  3. Step 3

    Automation

    We configure your tax engine and connect it to your store, billing and accounting systems.

  4. Step 4

    Ongoing filing

    Returns filed every period, reconciled to the general ledger, with a monthly status report.

Frequently asked questions

What is economic nexus?

Economic nexus means a state can require you to collect sales tax once your sales into that state pass a threshold, commonly $100,000 a year, even if you have no office or employees there. New York's threshold is $500,000 and 100 transactions.

Is SaaS subject to sales tax?

It depends on the state. New York, Texas, Washington and about 20 other states tax some or all SaaS, while California and Florida generally do not. Our nexus study includes a product taxability matrix.

We never collected sales tax. Are we in trouble?

It is common and fixable. Voluntary disclosure agreements usually limit lookback to three or four years and waive penalties. We negotiate these on your behalf, often anonymously at first.

Related services

  • Bookkeeping & Payroll

    Accrual-basis books closed by day 10, plus multi-state payroll, benefits and contractor payments.

    From $650/mo

    Learn more

  • Corporate Tax

    Federal, state and city corporate tax planning and filing for C-corps, S-corps and partnerships.

    From $3,500/yr

    Learn more

  • Audit Support

    Audit-ready financials, PBC lists and representation for IRS, state and investor or lender audits.

    From $4,500 per project

    Learn more

Get a fixed-fee proposal

Tell us about your business and we will reply within one business day.

Book a free consultation