Seatax
Seafarers’ Self Assessment tax return
If you are UK resident and paid as an employee at sea, you almost always need Self Assessment. SED is claimed on the return, not by ignoring HMRC. Paper filing is 31 October. Online filing and payment are 31 January.
Pain
Paid gross feels like you are outside the system. You are not.
Solution
We register as your agent, complete the return, and claim SED where the tests are met.
What we do on enrolment
You authorise Seatax to act. We send that authority to HMRC so correspondence comes to us. We complete the return. If a return we submitted is selected for investigation during enrolment, we deal with it.
New clients can ask us to check back up to four complete tax years. The standard fee applies for each year that needs a return.
What you send us
Discharge book copies, pay details (P60 or payslips), P11D or bond statements if relevant, and North Sea position sheets where they apply. Keep originals.
This page is general information based on published HMRC guidance, not personal tax advice. Seatax will apply the rules to your sea service after you enrol. Fees from £275 including VAT per return.
Questions people ask
I am paid by a foreign company. Do I still file?
If you are UK resident, worldwide income is in scope. Gross pay does not mean no return. We advise how to eliminate tax where SED applies, or to pay only what is due.
How much does Seatax charge?
£275 including VAT per tax return.
Enrol with Seatax
Ready to put your seafarer tax in order?
Fees from £275 including VAT per tax return. Download the pack, or call us and we will deal with your enquiry within 24 hours.