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(Cory Morse | MLive)

If you've gotten mail from the Secretary of State recently about your vehicle registration fee, don't wait to pay it.

The cost of vehicle registration fees for passenger vehicles and commercial trucks are going up starting Jan. 1, 2017 under the the state's road funding plan

Under that law, the registration fees are set to increase by 20 percent. For a motorist who pays a $100 registration fee each year, the bill would increase to $120.

Vehicle registration fees can be paid to the Secretary of State's office up to six months in advance. So, if your vehicle registration is due in the next six months, it may be possible to pay by Dec. 31 to avoid the new fee.

To check if you're currently eligible to pay your registration fee, visit the Secretary of State's website.

Use the calculator below to see how your registration fee will change under the increase. Type in the current registration fee, and the calculator will spit out an estimate of what your new fee could look like.

The registration fees were increased under the road funding package approved by the state legislature and signed by Gov. Rick Snyder in 2015. The increase is projected to generate $200 million a year in new revenue for roads.

In addition to rising vehicle registration fees, the road funding package also called for increasing both Michigan's 15 cent per gallon diesel tax and 19 cent per gallon gasoline tax to 26.3 cents on Jan. 1, 2017. Combined, the increases are projected to generate about $400 million a year in new revenue for roads. Beginning in 2022, fuel tax rates could rise or fall with inflation.