A subsea housing assembly has a subsea housing with a first and a second housing portion. The first and second housing portions have first and second electrical connections for data communication. A wall separates the first and second housing portions. The assembly has an inductive coupler with first and second coupling sections disposed in the first and second housing portions. The inductive coupler provides inductive coupling across the wall for data communication between the first and second electrical connections. The inductive coupler has inner and outer coils wherein the outer coil at least partly surrounds the inner coil and at least part of the wall extends between the inner and outer coil. Soft magnetic material is arranged around the outer coil and/or inside the inner coil such that the magnetic flux is collected and guided from the outer to the inner coil and/or from the inner to the outer coil.