Tax Guides & Resources

Expert guides to help you navigate multi-state tax residency, understand day counting rules, and prepare for audits.

Residency Rules

The Complete Guide to the 183-Day Rule

Everything you need to know about the most common statutory residency threshold: which states use it, how days are counted, abode requirements, and exceptions that could trip you up.

Updated February 2026 · 12 min read

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Tax Planning

States With No Income Tax: The Full Picture

The 9 states with no income tax, what taxes they charge instead, the true cost of living, departure state audit risks, and how to make the move correctly.

Updated February 2026 · 14 min read

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Remote Work

Remote Worker's Guide to Multi-State Taxes

Working from home in one state for an employer in another? The convenience of the employer rule, which states tax remote workers, and how to stay compliant.

Updated February 2026 · 13 min read

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Snowbirds

Snowbird Tax Guide: Florida, Arizona & Beyond

Splitting the year between two states? Day counting traps, safe harbor strategies, Florida domicile checklist, and how to stay on the right side of both states.

Updated February 2026 · 13 min read

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Nomad Life

Digital Nomad State Tax Survival Guide

Traveling across multiple states? How day counting works when you don't stay long, best domicile states for nomads, and practical strategies to minimize filing complexity.

Updated February 2026 · 12 min read

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Commuters

State Tax Reciprocity Agreements Explained

Which states have agreements to prevent double taxation, how they simplify filing for commuters, what income they cover, and the exemption forms you need.

Updated February 2026 · 11 min read

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NY Audit

Surviving a New York State Tax Residency Audit

New York is the most aggressive state for residency audits. The 5 primary factors auditors examine, how the audit process works, and how to build your defense before you need it.

Updated February 2026 · 15 min read

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Comparison

Days in State vs TaxDay: Which Is Better?

An honest comparison of two leading state tracking apps. Privacy, pricing, features, platforms, and which is right for your situation.

March 2026 · 8 min read

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Comparison

Days in State vs Domicile365: Tracking Compared

Individual-focused simplicity vs enterprise advisor portal. Compare privacy models, pricing, and use cases to find your fit.

March 2026 · 8 min read

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Comparison

Days in State vs TaxBird: Day Tracking Compared

Similar pricing, different philosophies. Compare privacy, lifetime purchase options, and target audiences between these two state trackers.

March 2026 · 8 min read

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Track Your Days Automatically

Stop guessing. Days in State uses GPS to create an objective, auditable record of your state presence.

Download on the App Store

Requires iOS 17.0 or later. iPhone only.