What is Substance Requirements?

Substance requirements are the world's answer to mailbox companies and paper residencies. Governments increasingly demand proof that you actually live, work, or operate where you claim to.

Why Substance Matters

• Tax authorities check whether your claimed tax residency is genuine
• Banks verify that your business address isn't just a virtual mailbox
• Immigration monitors whether you actually spend time in the country that gave you residency
• Treaty benefits (tax treaties, FEIE) require genuine ties to a jurisdiction

Types of Substance Requirements

Personal Tax Residency Substance

Most countries require 183 days of physical presence per year to claim tax residency. Some require less, some more:

Country	Days Required	Additional Requirements
UAE	90-183 days	Emirates ID, bank account, lease
Panama	0 formal days	But immigration expects genuine ties
Portugal	183 days (NHR program)	Registration, NIF number, housing
Georgia	183 days	Simple registration process
Paraguay	0 formal, but 183 for tax cert	Cedula, local address

Corporate Substance

For businesses, substance typically means:

• Physical office (not just a virtual address)
• Local employees or contractors
• Local bank account with real transactions
• Board meetings held in the jurisdiction
• Decision-making that demonstrably happens locally
• Revenue generation tied to local activities

The "Mind and Management" Test

Many jurisdictions determine a company's tax residency by where its "mind and management" reside — meaning where key decisions are actually made. If you incorporate in Dubai but run everything from your laptop in Lisbon, the company may be deemed Portuguese for tax purposes.

Common Substance Traps for Nomads

1. Claiming UAE residency but spending 10 months in Europe: Tax authorities in your actual location may claim you
2. Wyoming LLC with no US activity: The LLC itself is fine, but don't claim it provides tax benefits it doesn't
3. Multiple residencies: If two countries both consider you a tax resident, tax treaty tie-breaker rules apply
4. Digital nomad visa ≠ tax residency: Many nomad visas explicitly state you remain tax resident elsewhere

How to Build Genuine Substance

• Get a real lease (not just an Airbnb)
• Open local bank accounts and use them regularly
• Join local organizations or coworking spaces
• Keep travel records meticulously (flights, stamps, boarding passes)
• Register for local utilities in your name
• Maintain a local phone number
• File local tax returns even if you owe zero tax

The OECD/BEPS Impact

The OECD's Base Erosion and Profit Shifting (BEPS) initiative has pushed countries worldwide to implement economic substance laws. This means:

• Shell companies with no real activity face penalties or dissolution
• Jurisdictions that were previously "no questions asked" now require substance declarations
• Information exchange between countries makes it easier to detect lack of substance