Case Study 2: Multistate Tax Filing & Tax Saving Strategies
Operating in multiple states creates two major tax obligations:
1. Sales Tax Nexus
After Wayfair (2018), states can require businesses to collect sales tax even without a physical presence. Most states trigger nexus at $100,000 in sales or 200 transactions per year.
2. Income Tax Apportionment
If your business has employees, property, or significant sales in a state, that state may claim a portion of your business income. Each state uses its own apportionment formula — typically based on sales, payroll, and property factors.
⚙️ What Alpha CPA LLC Did
Step 1 — Nexus Study
We conducted a full nexus review across all 50 states, identifying Sarah’s actual filing obligations based on her sales data.
Step 2 — Voluntary Disclosure Agreements (VDAs)
For states where Sarah had unfiled obligations, we negotiated VDAs — allowing her to come into compliance with reduced or waived penalties.
Step 3 — Strategic State Selection
We restructured her business operations to take advantage of no-income-tax states (like Texas, Florida, and Nevada) for certain activities, legally reducing her overall state tax burden.
Step 4 — Ongoing Compliance System
We set up automated sales tax collection through her e-commerce platform and established a calendar for multistate filing deadlines.
💰 The Results
| Issue | Before Alpha CPA LLC | After Alpha CPA LLC |
|---|---|---|
| States filing in | 3 | 14 (correct obligations) |
| Penalty exposure | $87,000 estimated | $0 (VDA negotiated) |
| Overpaid state income tax | Unknown | $31,200 recovered |
| Annual state tax savings | — | $44,500/year |
Alpha CPA LLC eliminated $87,000 in penalty exposure and saved Sarah $44,500 annually in state taxes.
Project Tips
Alpha CPA LLC assisted a Dallas-based e-commerce business owner generating $3.4M in annual revenue across 38 states. Following the South Dakota v. Wayfair ruling, the client had significant unaddressed nexus obligations. Our team conducted a full nexus study, negotiated Voluntary Disclosure Agreements, and restructured operations to minimize ongoing state tax liability.
- - Checklist — Multistate Tax Compliance 1. Nexus study completed for all 50 states 2. Economic nexus thresholds reviewed ($100K sales or 200 transactions per state) 3. Sales tax collection enabled on all e-commerce platforms 4. Voluntary Disclosure Agreements filed for non-compliant states 5. State income tax apportionment formula reviewed for each state 6. Remote employee locations tracked for nexus implications 7. Multistate filing calendar created with all deadlines 8. High-tax vs. low-tax state strategy reviewed with CPA 9. Annual nexus review scheduled as business grows 10. Sales tax exemption certificates collected from B2B customers
Overview & Challenge
After the landmark South Dakota v. Wayfair Supreme Court ruling, Sarah's business had economic nexus in dozens of states — meaning she owed sales tax and potentially income tax in multiple states. She was filing in only 3 states and had no idea of her exposure.