I plan to go to Singapore in September (self-help tour). How long in advance should I apply for a visa?

If you want to find a travel agency, you should at least 1 month in advance.

If you do it yourself, you can get your passport in about half a month now, but the visa is more troublesome. Especially in the summer vacation, if you do it yourself, it will take about 3 or 4 months in advance. And you should prepare all the materials needed for a visa, including a copy of your passport, ID card account book, business license of your company, employment certificate, personal assets certificate, and a copy of your marriage certificate if you are married. (That's what the Singapore self-help tour handbook says. )

So if it's convenient, it's best to entrust a travel agency, but you have to pay a deposit of 50,000-200,000 yuan.