One of the benefits included in the relocation package is that the company will pay for an accounting firm to do both my US and Swiss taxes this year. I had to fill out the online questionnaire and submit scanned copies of all necessary documents by the 29th. It was sort of like using Turbo Tax, but not as user friendly.
I believe the Swiss return must be submitted in March. We get an automatic extension for the US taxes, but I'm not sure how long it is.
Next year I want to try to do my own taxes, but I'll really need to work on my French. The government provides software to use to complete the return, but it is only in official languages.