求翻译：对外籍个人以非现金形式或实报实销形式取得的合理的住房补贴、伙食补贴和洗衣费免征个人所得税，应由纳税人在初次取得上述补贴或上述补贴数额、支付方式发生变化的月份的次月进行工资薪金所得纳税申报时，向主管税务机关提供上述补贴的有效凭证，由主管税务机关核准确认免税。是什么意思？

Foreign staff to non-cash form or by any reimbursement made reasonable housing subsidies, food subsidies and laundry are exempted from individual income tax, should be subsidized by taxpayers in the first such subsidies or the above amount, payment method changes the month when the monthly wage and salary income tax declaration, to the competent tax authorities to provide valid credentials for the subsidies, approved by the competent tax authorities to confirm tax-free.