Claim your commute in your tax return:
Depending on how far away your place of work in Switzerland is, you cover a fair number of kilometres every day. Do not forget to claim the daily commute in your German tax return.
The right bank for cross-border commuters:
Do not open the bank account you will often need as a commuter in Switzerland with just any bank. Take the time to compare the offers, because the fees vary considerably. Some banks are commuter-friendly; others do not count commuters among their target customers and charge correspondingly high fees.
Well insured in case of illness:
As a cross-border commuter you can choose whether to join a health insurer in Switzerland or stay insured in Germany. A combination of the two is also possible and very common. Look into this early, because once you take up your job in Switzerland you have only three months to decide. After that you are "compulsorily insured" at your place of work. You will find more information on the complex subject of health insurance here.
Saving tax as a cross-border commuter:
As a commuter you continue to pay your tax in Germany. A high salary can drive your tax bill up quickly. Take the opportunity to save a good deal of tax by taking out a direct insurance policy through your employer. That way you not only save tax but also provide for your old age at the same time. Contributions of up to around EUR 6,700 a year (as at 2020) can be claimed in full for tax purposes. You will find more information on the three-pillar system and retirement provision in Switzerland here.
Swiss tax rates for certain occupational groups:
One clause of the double taxation agreement between Switzerland and Germany can be very interesting for certain occupational groups: it states that commuters who, for professional reasons, cannot spend the night at their German residence on more than 60 days a year pay tax on their entire salary in Switzerland. That way you benefit from the considerably lower Swiss tax rates without having your official residence in Switzerland.