Do I pay tax in both countries when I move abroad?

It depends on where you are tax resident and on the treaty between the two countries. Many countries tax residents on income from everywhere and tax some income where it arises, so the same income can be claimed twice. A double tax treaty usually decides which country taxes first and how the other gives credit. Heed watches both countries' rules and the treaty between them, and flags changes that touch your income.

What is the 183-day rule?

Many countries treat you as tax resident if you spend more than 183 days there in a tax year. It is rarely the only test: a home, your family or the centre of your economic life can make you resident with fewer days, and the UK uses its own Statutory Residence Test. Heed counts your days in each country and warns you before you reach the line you set.

Can I still be tax resident in my home country after I leave?

Yes, it is possible. The ties you keep, such as a home, family or work, and the days you spend on visits can keep you resident or bring residence back, depending on that country's rules. Heed tracks your visits against your home country's tests.

How does Heed know which changes affect me?

You tell Heed where you live, where you are from and how you earn and hold your money. Each change from an official source is matched to that profile and marked Affects you or Monitor, with a short brief in plain English and a link to the source.

Does Heed replace my tax adviser?

No. Heed is intelligence, not advice. It tells you what changed and why it may matter to you, so the conversation with your adviser starts from the facts.

A family making breakfast in the kitchen of their new apartment abroad, the father opening the window to the city.

Solutions · Expats

You moved abroad. Two tax systems moved with you.

Home country, host country, one life in between. Both keep changing the rules. Heed watches both borders at once, so you hear it first, not a year later.

View FAQ

The quiet risk

The cost of finding out a year late.

Expat tax trouble is rarely a big decision gone wrong. It is the small assumption you carried from home, the one that quietly stopped being true while you were busy living.

Example
The treaty between your two countries changed, and the pension you thought it protected is now taxed twice.
Without Heed With Heed
The rule changesNext year
Without Heed
Without Heed: 8 months later
Found out: when the pension was taxed twice
With Heed
HeedAffects youSoon after it is published
With Heed: Treaty changes that touch your pension reach your feed when they are published, matched to where you live and where you are from.
Without Heed
The same pension taxed in both countries.
With Heed
Time to plan the next payment with your adviser.

Example

The treaty between your two countries changed, and the pension you thought it protected is now taxed twice.

Without Heed With Heed

The rule changesNext year

Without Heed

Without Heed: 8 months later

Found out: when the pension was taxed twice

With Heed

HeedAffects youSoon after it is published

With Heed: Treaty changes that touch your pension reach your feed when they are published, matched to where you live and where you are from.

Without Heed

The same pension taxed in both countries.

With Heed

Time to plan the next payment with your adviser.

Example

Your new country changed how it taxes income from abroad, and your accountant only flagged it in March.

Without Heed With Heed

The rule changesNext year

Without Heed

Without Heed: 9 months later

Found out: in March, from your accountant

With Heed

HeedAffects youBefore your next return

With Heed: When your host country changes how foreign income is taxed, you hear it from Heed first, with a short brief and the official source.

Without Heed

A bigger bill, found when you file.

With Heed

Know before the year closes, with the official source.

Example

A treaty update changed the tax withheld on your dividends, and your plans still use the old rate.

Without Heed With Heed

The rule changesNext year

Without Heed

Without Heed: 5 months later

Found out: after the dividend was paid

With Heed

HeedMonitorBefore the next dividend

With Heed: A treaty renegotiation shows you the new withholding rate on your dividends before you plan around the old one.

Without Heed

Less paid out than you planned for.

With Heed

Plan the next dividend at the new rate.

Example

A long visit home took you over its residency line, and you were taxed there on everything again.

Without Heed With Heed

You cross the lineNext year

Without Heed

Without Heed: 5 months later

Found out: from the tax office

With Heed

HeedDeadline28 days before the line

With Heed: Your days in each country are counted, and Heed warns you before a long visit home reaches the line you set.

Without Heed

Taxed at home on everything you earn, again.

With Heed

Shorten the trip, or plan the year knowing it counts.

Months later, a bill.

In time, a decision.

What Heed monitors

Both sides of your border, watched at once.

Heed connects your home country, host country, and anywhere your income or assets sit, then watches them for changes that affect you specifically.

A family stepping through the front door of their new home abroad, seen low and close.

Heed · Residency TrackerExample

137 / 183 in United Kingdom

Tap a day to log it in United Kingdom Today

Heed · Change FeedExample

BelgiumExampleNew
Expat tax regime: allowance cap changes
Affects you
The cap on the tax-free allowance changes, which affects renewals and new arrivals. Review before your next filing.
ItalyFeb 2026
Impatriate regime extended for researchers
Noted
Specialised workers regime updated, relevant if you moved under the scheme between 2020 and 2023.
United KingdomApr 2025
Non-dom regime replacement: residence-based system
Monitor
Foreign income and gains exemption window narrowed, review remittance planning before the next tax year.

Watched for you

Home-country residency tests
Day counts against each country's test, and changes to the tests themselves, so you don't accidentally re-trigger tax residency.
Host-country regimes and reliefs
Impatriate regimes, foreign-source carve-outs, and remittance rules, including the changes that tighten them.
Residence permits and re-entry windows
Indefinite leave, a green card, or a residence visa can lapse after one long stretch away, whatever your day counts say. Enter the maximum absence your own permit allows and Heed warns you before the window closes.
Double-tax treaties and withholding rates
Treaty and withholding changes on dividends, interest, royalties and pensions, when a tax authority publishes them.
Reporting obligations across borders
Changes to FATCA, CRS and foreign-account reporting rules.

What Heed changes when you owe two countries.

Tracking your home country
Stay on top of rule changes back home so a visit, an inheritance, or a property sale doesn't catch you off guard.
Mastering your host country
Monitor the regime you moved under, and, on Pro, the proposals that could change it before your next renewal.
Coordinating with your advisor
Bring current, verified intelligence to every meeting, so the conversation is about decisions, not catch-up.

Questions

What people ask before they start.

Straight answers to the questions people search for before they sign up. Heed is intelligence, not advice.

: It depends on where you are tax resident and on the treaty between the two countries. Many countries tax residents on income from everywhere and tax some income where it arises, so the same income can be claimed twice. A double tax treaty usually decides which country taxes first and how the other gives credit. Heed watches both countries' rules and the treaty between them, and flags changes that touch your income.
: Many countries treat you as tax resident if you spend more than 183 days there in a tax year. It is rarely the only test: a home, your family or the centre of your economic life can make you resident with fewer days, and the UK uses its own Statutory Residence Test. Heed counts your days in each country and warns you before you reach the line you set.
: Yes, it is possible. The ties you keep, such as a home, family or work, and the days you spend on visits can keep you resident or bring residence back, depending on that country's rules. Heed tracks your visits against your home country's tests.
: You tell Heed where you live, where you are from and how you earn and hold your money. Each change from an official source is matched to that profile and marked Affects you or Monitor, with a short brief in plain English and a link to the source.
: No. Heed is intelligence, not advice. It tells you what changed and why it may matter to you, so the conversation with your adviser starts from the facts.

Know where you stand, before the world moves.

Start tracking the rules that decide where, and how much, you owe.

View FAQ

A man arriving at the door of a New York brownstone with a suitcase, keys in hand.