Income Tax Compliance

Filing your annual income tax return in Portugal requires not only accuracy but also a clear understanding of local legislation and international tax obligations. Our income tax compliance services are designed to simplify this process and give you peace of mind.

We ensure that your Portuguese tax return is accurate, complete, and submitted on time, while also assessing your obligations in other jurisdictions where you may earn income.

Our experienced tax professionals carefully review your financial situation to apply the correct rules under Double Taxation Treaties (DTT), preventing double taxation and ensuring full compliance with both Portuguese and international regulations. By identifying eligible deductions, exemptions, and credits across borders, we help you optimise your tax position and avoid costly errors.

With our expertise, you can confidently manage your global tax obligations, knowing that every detail is taken care of — locally and internationally.

What people say about us

“I was reffered to Jessica at JS Advisers by an expat friend. As is my habit filing taxes in the United States, I waited until the last minute to file taxes here. Two days before tax filing in Portugal were due I reached out to JS Advisers to complete what was ultimately a very complicated and time consuming return. Jessica and her team were prompt in their response, let me know the time constraints and obstacles due to the last minute notice I’d given. Luckily for me, they were up for the challenge. Ultimately they saved the day for our tax filing and have a customer for life. I highly Reccomended them.”

“It has been four years now since JS Advisers took over managing our books. In that time they have been flawless. Their communication is prompt and clear, everything happens on time, their fees are very reasonable, but there’s something more; they are really nice people to deal with. I recommend them very highly.”

"Jéssica from JS Advisers has been handling my family’s finances since we arrived in Portugal 2 years ago. It can all be a bit daunting at first as there is too much bureaucracy to handle but she guided me not only to understand it but also to solve the situation at hand. The services that JS Advisers did for us have been: IRS, Mais-Valias and dealing with AT Finanças with submitting all documentation. Her professional advice has been most welcome!”

“We are originally from the United States and have been living in Spain for the past few years. When we decided to move to Portugal and to buy various properties, we were quite overwhelmed by the tax system, the bureaucracy, and everything in between. Luckily, a friend told us to work with JS Advisers and we could not be happier. Our contact person is Jessica Cruz and she is the absolute best. She communicates and helps us to understand everything and she is extremely transparent and honest as well. Jessica has always provided a very good service at a fair price and we would highly recommend her firm to anybody who needs an excellent accountant. Without Jessica, we would never have been able to own and rent properties in Portugal. Finally, my wife and I worked in the financial industry in the United States for many years and we have worked with many accountants over the years and Jessica is one of the best!”It can all be a bit daunting at first as there is too much bureaucracy to handle but she guided me not only to understand it but also to solve the situation at hand. The services that JS Advisers did for us have been: IRS, Mais-Valias and dealing with AT Finanças with submitting all documentation. Her professional advice has been most welcome!”

" I cannot recommend them enough. Use their expertise and advice, you will not be disappointed. Their telephone service is recommended as a fast way to put your mind at rest as well. Our contact person is Jessica Cruz and she is the absolute best. She communicates and helps us to understand everything and she is extremely transparent and honest as well. Jessica has always provided a very good service at a fair price and we would highly recommend her firm to anybody who needs an excellent accountant. Without Jessica, we would never have been able to own and rent properties in Portugal. Finally, my wife and I worked in the financial industry in the United States for many years and we have worked with many accountants over the years and Jessica is one of the best!”It can all be a bit daunting at first as there is too much bureaucracy to handle but she guided me not only to understand it but also to solve the situation at hand. The services that JS Advisers did for us have been: IRS, Mais-Valias and dealing with AT Finanças with submitting all documentation. Her professional advice has been most welcome!”

" I cannot recommend them enough. Use their expertise and advice, you will not be disappointed. I am very happy to recommend JS Advisers, they are trustworthy, honest and hardworking. They keep themselves well informed within the Portuguese legislation and are always a joy to work with.Without Jessica, we would never have been able to own and rent properties in Portugal. Finally, my wife and I worked in the financial industry in the United States for many years and we have worked with many accountants over the years and Jessica is one of the best!”It can all be a bit daunting at first as there is too much bureaucracy to handle but she guided me not only to understand it but also to solve the situation at hand. The services that JS Advisers did for us have been: IRS, Mais-Valias and dealing with AT Finanças with submitting all documentation. Her professional advice has been most welcome!”

They have assisted me with my Social Security and IRS financial situations, trustworthy and hard working. I would highly recommend their services.

Income Tax Compliance

What people say about us

Every situation is unique.Get personalised tax advice.

Every situation is unique.
Get personalised tax advice.