How Commuter Benefits Cut Your Transportation Costs

What commuter benefits are and how they work

Commuter benefits let you set aside pre-tax money from your paycheck to pay for transit, parking, or vanpool costs. Your employer deducts the money before income tax is calculated, which means you pay less in federal and state income tax on that portion of your salary. You then use that money to cover your actual commuting expenses.

The benefit works because the IRS treats commuting costs differently when they come from pre-tax dollars. If you normally pay $200 a month for a transit pass with after-tax money, you're spending money that's already been taxed. With a commuter benefit, that same $200 comes out before taxes are applied, so you save on the tax you would have paid on those dollars.

Most employers offer this through a third-party administrator who manages the account, issues a debit card or transit pass, or reimburses you for expenses you've paid out of pocket. Some employers run the program directly. Either way, the money sits in an account that's separate from your regular paycheck.

Key Takeaways

• Commuter benefits reduce your taxable income, which lowers both federal and state income tax on the money you set aside for transportation.
• The IRS sets annual limits on how much you can set aside — currently $315 per month for transit and vanpool combined, and $280 per month for parking, though these amounts change yearly.
• You choose how much to set aside during your employer's open enrollment period, and the amount is locked in for the year unless you have a may have access to life change.
• Not all employers offer commuter benefits, and some offer only parking or only transit — check with your human resources or benefits department about what's available to you.
• You lose any money you don't spend in the account by the end of the year, so you need to estimate your actual commuting costs carefully.

How much you can set aside and what it covers

The IRS sets a monthly cap on pre-tax commuter money, and the cap changes each year. For 2024, you can set aside up to $315 per month for transit passes and vanpool costs combined, and up to $280 per month for parking. These limits apply whether you use one form of transportation or combine them.

Transit includes buses, trains, ferries, and vanpools — any shared vehicle where you're not the driver. Parking covers spaces at a transit station, your workplace, or anywhere else you need to park to get to work. Some employers let you split the $315 between transit and vanpool if you use both, or use the full amount for whichever one costs more.

The limits reset on January 1 each year, and the IRS updates them annually to account for inflation. Your employer's benefits administrator will tell you the current year's limits during open enrollment. If you're unsure whether a specific expense qualifies — such as bike storage or EV charging — ask your benefits department, because the rules can vary slightly depending on how your employer's plan is structured.

When you choose your amount and how to change it

You select how much to set aside during your employer's open enrollment period, which usually happens once a year in the fall or early winter. The amount you choose is deducted from each paycheck for the following year. If your employer offers the benefit mid-year, you may be able to start at any time, but the amount still typically runs through December 31.

Once you've chosen an amount, you cannot change it unless you have a may have access to life event. These include a change in your commuting situation (moving, changing jobs within the company, or starting or stopping use of transit), a change in your household (marriage, divorce, birth of a child), or a change in your employer's plan. A simple change of mind is not enough — you have to wait until the next open enrollment period.

If you do have a may have access to event, contact your benefits department within 30 to 60 days (the exact window depends on your employer) to request a change. You'll need to document the change — for example, a lease showing your new address or a letter from your transit agency confirming a rate increase. Without documentation, most employers won't process the change.

The tax savings you actually see

Your tax savings depend on your income tax bracket and state taxes. If you set aside $200 per month and you're in the 22% federal tax bracket, you save roughly $44 per year in federal tax alone. Add state income tax — which ranges from 0% to over 13% depending on where you live — and your total savings could be $60 to $100 per year on that same $200 monthly amount.

The savings are real but modest for most people. The larger benefit is that you're paying for a necessary expense with money that hasn't been taxed, which is a small but consistent reduction in your tax bill. Over a full year, someone setting aside the maximum $315 per month for transit could save $500 to $1,000 in combined federal and state taxes, depending on their tax bracket and state.

Your paycheck will be slightly smaller because the commuter money comes out before you see it, but your take-home pay after taxes is usually higher than it would be if you paid for commuting with after-tax dollars. Some people find it helpful to think of it as paying for transportation with pre-tax money rather than as a reduction in their paycheck.

What happens to money you don't spend

Commuter benefit accounts operate under a use-it-or-lose-it rule. Any money you set aside but don't spend by December 31 is forfeited — you cannot roll it over to the next year, and you cannot get it back as a refund. This is a federal rule that applies to almost all employer commuter programs.

The forfeited money goes back to your employer or to the plan administrator, not to you. This is why estimating your actual commuting costs carefully is important. If you set aside $300 per month but only spend $250, you lose $600 at the end of the year.

Some employers offer a short grace period — usually 2.5 months into the following year — during which you can spend money from the previous year's account. Check with your benefits department about whether your plan includes this option. If it does, you have a little more flexibility, but you still cannot carry money forward indefinitely.

How to estimate what you actually spend

Start by calculating your monthly commuting costs for a typical month. Write down what you pay for transit passes, parking, or vanpool fees. If you drive and use parking at work, include that. If you take the bus, include the monthly pass cost. If you use multiple forms of transit on different days, add them together.

Then multiply that monthly amount by 12 to get your annual cost. Compare that to the IRS limits for the year. If your actual annual cost is $2,400 and the transit limit is $3,780 ($315 × 12), you would set aside $200 per month rather than the full $315, because that's what you actually need.

Account for changes you know are coming. If you're planning to work from home two days a week starting in March, reduce your estimate accordingly. If you know parking rates are increasing in July, add that to your calculation. The goal is to set aside as close as possible to what you'll actually spend, without going over.

Employers that don't offer commuter benefits

Not all employers offer commuter benefits, and some offer only one type — for example, parking but not transit. If your employer doesn't offer the program, you cannot set aside pre-tax money for commuting through your job. You would pay for transportation with after-tax dollars, which means you pay income tax on the money before you spend it.

If you're self-employed or a contractor, you cannot use an employer commuter benefit program. However, you may be able to deduct commuting expenses on your tax return if you have a home office and travel between home and a client site — this is different from a regular commute to a single workplace. Consult a tax professional about whether your situation qualifies.

Some states and cities offer commuter benefit programs outside of employers, though these are less common. Check with your local transit agency or your state's department of revenue to see whether any programs are available in your area.

Frequently Asked Questions

Can I use commuter benefits if I work from home part of the time?

Yes, but you set aside money only for the days you actually commute. If you work from home three days a week, calculate your commuting costs for the two days you're in the office and set aside that amount. Some employers let you adjust your election if your work-from-home schedule changes mid-year, which counts as a may have access to life event.

What if I change jobs during the year?

Your commuter benefit account usually ends when you leave your employer. You may be able to continue using the money you've already set aside through the end of the year, but rules vary by plan. Contact your benefits administrator before you leave to find out what happens to your account. At your new job, you can enroll in their commuter program during open enrollment or if they allow mid-year enrollment.

Do I have to use a transit pass, or can I get reimbursed for individual trips?

Most programs require a monthly or annual transit pass or a parking contract. Some allow reimbursement for individual trips if you use a transit card or app that tracks spending, but you'll need to submit receipts. Ask your benefits administrator what documentation they require for reimbursement.

Can my spouse and I both use commuter benefits at our jobs?

Yes. Each of you can set aside money through your own employer's program, up to the IRS limits. The limits are per person, not per household, so you're not combining your amounts.

What if my transit costs go up during the year?

A rate increase from your transit agency counts as a may have access to life event in most plans. Contact your benefits department with proof of the increase — usually a letter from the transit agency or a screenshot of the new fare — and you can increase your election. You cannot decrease it unless you have another may have access to event.