0 a charge that is the same for everyone -- 统一价格；定额收费
a flat-rate contribution 所有人数额相同的定期缴款
Electricity is charged at a flat rate per year.
Co-payments tend to be calculated in a way that combines a flat rate depending on the long-term care allowance and an income-related part.
All the major federal parties supported the prolongation of the flat rate tax.
For the elderly, the flat rate gradually increased, and in 2003, changed to an across-the-board 10% co-insurance rate.
Moreover, most benefits are paid at a flat rate.
The other impractical model was a universal tax-financed pension with a flat rate.
Since then the allowances are paid at a flat rate irrespective of income, though they rise with the number of children.
The effect of current plans for state pensions is to restore something closer to a flat rate state pension, but with significant complexity.
