IND官网信息 最早 过期前6个月就可以续期了
When can I extend my residence permit?
You can submit an application 3 to 6 months before your residence permit expires. This will give the IND sufficient time to make a decision. In case of a positive decision, your new residence permit will be ready in time.
Do you have a residence permit for which a recognised sponsor is required, such as study or highly skilled migrant? The recognised sponsor (your employer or eductional institution for instance) will have to submit the application for the extension of your residence permit. You cannot do this yourself.
Is your residence permit still valid for at least 6 months? Then you cannot yet submit an application to extend your stay. The IND is then unable to make a proper assessment.