You may apply for a new social security card if you have lost your card, damaged it, or if it is no longer readable.Are you temporarily sending staff abroad? To prove that German social security law continues to apply, you can apply for an A1 certificate for your employees.If your personal data changes, you must inform the Künstlersozialkasse. You should also inform the Künstlersozialkasse if your contact details change or expand.Has your professional situation changed in such a way that you expect a different income from your self-employed artistic or journalistic work? Then you need to adjust your income estimate with the Artists' Social Insurance Fund.As a single parent with at least one child in the household who is entitled to child allowance or child benefit, you can apply for the tax relief amount for single parents and thus for tax class 2.If you, as an insured person in the artists' social insurance scheme, have a question or concern in connection with your compulsory insurance, you can contact the Künstlersozialkasse.If you are a foreign recipient (creditor) of domestic investment income, you may be fully or partially relieved of capital gains tax under certain circumstances.