Can I make contributions more than 5% of the maximum monthly income (i.e. HK$30,000 per month) (with effect from 1 June 2014)?

Yes. Although there is a maximum relevant income level for calculating mandatory contribution, both employers and employees are allowed to make contribution in excess of the mandatory contribution as required by the MPF legislation. Such additional contribution will be treated as voluntary contribution. Having said that an employer is not obliged to match the voluntary contribution made by its employees. Also, please be advised that there are rules under the MPF scheme in which you participate governing the vesting and withdrawal of your accrued benefits that are attributable to voluntary contribution made by you or on your behalf by your employer.