ACRA and IRAS Accounting and Corporate Regulatory Authority (ACRA) is an arm of the Ministry of Finance of the Singapore government. Anything that is related to businesses and their operations usually falls under the jurisdiction of ACRA. Inland Revenue Authority of Singapore (IRAS) is another arm of the Ministry of Finance that focus mostly on tax collection. While you do need to update your registered address on both departments, you can do it in one shot by going to bizfile. A change in the ACRA Bizfile database will reflect on the IRAS file on a weekly basis. However, if you need to do a change of address in IRAS for urgent matters (like receiving a tax refund or correspondence from IRAS soon), you can send over an email via the myTax Mail that contains the documents/information like: Tax reference number of the company Name of the company New Address as updated with ACRA Ministry of Manpower Ministry of Manpower (MOM) of Singapore, handles labour policies and everything labour/workforce related in Singapore. If you are an Employment Pass holder: You need to update your Employment Pass through EP Online about the change in registered address. If you are a CPF account holder: You need to inform and update the CPF board about the change in registered address. Your bank If you would like the mailing address to be changed to your new registered address, you may wish to contact your respective bank(s) to have that updated for you. Your suppliers If you have had a change in address, it’s best to let your suppliers know as soon as possible. This is to make sure they can easily adjust their schedule in delivering what they are suppose to do for you on time without having to disrupt their routine. Your investors While they might be one of the first people to know of a potential move, sending out a document informing when and where you are moving is always a good move. This not only shows the respect you have for your investors but also reassures them of their importance in your business. Your customers/followers While this varies from one business to another, informing your followers (on your website, social media and online directories) and prospective customers is necessary.