Subsidize more public charging. As that will mostly benefit people who can only afford cheaper / older EVs. As less range means more of a need to use public charging. And it will help to provide the biggest incentive to those who drive their EVs the most. Which means a better payoff for the government, in relation to the amount carbon emissions reductions gained Vs money spent.

This will also be fair to those who want to buy an EV, But who can't buy one now for whatever reason. As those public chargers will still be available when they do eventually buy an EV.

Subsidize the interest rates when buying an EV on finance. As it would make it far easier for low income people to get an EV. As you currently can get a reasonable secondhand ICE car for around $5K. But a reasonable secondhand EV is around $20K. If you have to pay 16% or so interest rates. Which are typical for secondhand car loans, where you don't own a house or other similar assets.

Again, this will help low income people the most. As it avoids the trap, where the savings from owning an EV get eaten by interest costs. And saving up for the higher purchase price doesn't work either. As you still have to pay the higher running costs of an ICE car, while you are trying to save up enough to pay for an EV.

Allow companies to write off the entire purchase costs of an EV and / or EV charging equipment, in the year when purchased. Instead of having to deprecate the purchases. This is revenue neutral for the government. Yet makes a big difference to cashflow for the company that is buying the EVs / charging equipment.

It will also help to encourage the installation of privately owned / used charging equipment. EG - chargers installed in staff car parks. Hotels installing EV chargers for their guests. Landlords installing EV chargers in their rental properties.