Each resident has an equal amount of carbon credits available per month. The credits are used up when buying gas, purchasing non-local products or engaging in other types of high footprint activities. Individuals who exceed their monthly limit need to purchase carbon credits from the credit/debit system, while individuals who do not use all of their credits will get reimbursed for the unused portion. Control of carbon emissions is achieved by setting the monthly limit and the cost of a unit of carbon. This system provides a financial incentive for individuals to reduce carbon emissions. Though difficult to implement in its entirety at once, Vancouver could pioneer this type of system by starting with a few activities that contribute to high carbon emissions, such as buying gas.