The best rental car loyalty programs in 2026 are the ones that publish their numbers, and only two of the big five really do. National and Enterprise tell you exactly what a free day costs and what each tier takes. Avis tells you too. Hertz publishes the rules but not the rates, and Alamo's program isn't a points program at all.
This is a rewrite, done in September 2026 by reading each company's own pages rather than repeating what everyone says about them. Every number below comes from the rental company's own site, read on September 11, 2026.
How These Programs Differ From Airline Miles
Two things separate rental car programs from the airline and hotel programs you're used to.
They mostly count rentals, not dollars. National and Enterprise measure status in rentals and rental days. A one-day rental counts the same as a week for tier purposes at National.
The free day is capped by the car, not the price. A free day usually covers the base rate, meaning time and mileage, and leaves you the taxes and fees. That's a smaller prize than a free hotel night, and it arrives faster.
There's a third difference that matters more than either. At most of these programs you can take airline miles or hotel points instead of rental credits, which means the program competes with your other balances rather than adding to them.
National Emerald Club: the Simplest Math
National's program is the one I'd point a frequent renter to first, because the arithmetic is stated plainly on its benefits page.
Earning. "Earn 1 rental credit for every qualified car rental." Not per dollar. Per rental.
Free days. Seven credits gets a free day up to a midsize car at the base tier. Executive members need six credits and get up to a full-size. Executive Elite members need five and can use it on "any car class except Trucks and exotic vehicles."
Status. "Emerald Club Executive status is yours with 12 paid rentals or 40 paid rental days in a calendar year." Executive Elite "is attainable with 25 paid rentals or 85 paid rental days in a calendar year."
The Emerald Aisle. Base members can "choose any car (Midsize and above) on the Emerald Aisle and only pay the reserved Midsize rate in US and Canada." That's the benefit people actually stay for, and it starts at the entry tier.
Free days expire. National's 2026 program rules say free days are forfeited on the earlier of December 31 of the year following the year they were earned, or the end of your membership.
One gap worth knowing: National doesn't state anywhere on its program pages or in its 2026 rules what it costs to join. Every other program here says free in so many words.
If you rent often enough to reach Executive, our older look at the Emerald Club experience covers what the aisle feels like in practice.
Enterprise Plus: Points Per Dollar, With a Tier Bonus
Enterprise runs the program that behaves most like a credit card, and its loyalty page and terms spell it out.
Earning. "Members will earn one (1) point for every Qualifying U.S. Dollar Spent on a Qualifying Rental." Qualifying dollars are the base rate, paid upgrades and add-ons like GPS or ski racks, minus discounts. Taxes, surcharges, airport fees and insurance don't count.
Tier bonuses. Silver earns a 10% points bonus, Gold 15% and Platinum 20%.
Tiers, by rentals in a calendar year. Plus is 1 to 5 rentals, Silver 6 to 11, Gold 12 to 23, and Platinum 24 or more. Gold and Platinum can also be reached on days: 40 to 84 for Gold, 85 or more for Platinum.
Upgrade certificates. Silver gets one free one car-class upgrade certificate per program year, Gold two, Platinum four. Enterprise requires you to print the certificate and hand it over at the counter, which is a real friction in 2026.
Free days. Points needed "will vary depending on the combination of the rental pickup location, car class and time period of rental," and the free day covers base rate only.
Expiry. Enterprise's page puts it positively: "Points never expire as long as you remain an active member with at least one qualifying rental every three years." The terms put it exactly: points are forfeited after 36 consecutive months of inactivity.
Membership is free, per the same page.
Enterprise and National are partners. Enterprise says you can "earn points and elite status worldwide, with Enterprise Plus through our partner, National Car Rental," and its terms count a National rental as qualifying when your Emerald Club profile lists your Enterprise Plus number as the rewards preference. Pick one of the two and you're still earning at both.
Avis Preferred: the Clearest Chart
Avis publishes the most detailed table of the five, on its Avis Preferred page.
Earning, per dollar. Avis Preferred earns 1 point per $1 on the rental and 2 on accessories. Avis Preferred Plus earns 1.25 and 2.5. Avis President's Club earns 1.5 and 3.
A floor and a starter bonus. "As a Preferred Member, you earn a minimum of 100 points every rental," plus "100 bonus points when you rent within the first three months of joining."
Status. Preferred Plus is "earned after 10 rentals or $4,000 spent." President's Club is "earned after 20 rentals or $6,000 spent." The upgrades that come with them are one and two car classes, subject to availability, excluding large SUVs and the Signature Fleet.
Redemption, by price band. Reward days are grouped into four levels set by the standard base rate: 700 points for a rate up to $50, 1,400 for $50.01 to $85, 2,100 for $85.01 to $125 and 3,500 for $125.01 to $225. Accessories cost 250 points each per day, and rentals above $225 a day can't be booked with points at all.
That last rule is the one to plan around. A 3,500-point reward day against a $225 rate is the best redemption on the chart, and the same 3,500 points on a $60 day would be a waste.
Enrollment is free, per the page's "Enroll Now for Free."
Avis's posted program terms PDF, whose filename dates it to 2017, adds two rules the live page doesn't: points are valid for 60 months from when they were earned, and points aren't earned on rentals that earn miles or points in a frequent traveler program. The live page and that PDF also disagree on tier thresholds, so treat the live page as current and the PDF as background.
Hertz Gold Plus Rewards: Rules Yes, Rates No
Hertz publishes the mechanics and withholds the math, which is why it sits fourth here rather than first.
From its Gold Plus Rewards pages, read September 11, 2026:
Cost. "Joining Gold+ is completely free of charge."
Earning. "Points are earned on the base rental rate only which excludes taxes, fees, and additional products and services."
Redemption. "To earn a free rental car with your Gold+ points, you need at least 950 points."
Expiry, twice over. Points are "valid for five years from the date that they were earned," and separately "all points in a Gold+ member's account will be forfeited and removed from a member's account after twelve months of no rental activity." The five-year rule doesn't apply to residents of Canada.
Tiers. Hertz says only that there are "additional travel perks and free upgrades based on loyalty tier."
What Hertz doesn't publish on those pages is how many points a dollar earns or what each tier requires. Numbers for both circulate widely, and the ones we could find sat in a co-branded corporate flyer rather than on the program's own pages, so they're not in this guide. If you're choosing a program on the strength of its published terms, that absence is the finding.
Hertz is still the program most tied to airline partners, and our piece on earning Delta SkyMiles with Hertz covers that side. If you rent at Los Angeles, our Hertz at LAX guide covers the facility.
Alamo Insiders: a Discount, Not a Program
Alamo Insiders gets counted as a loyalty program in most roundups. It isn't one.
Alamo's own page says: "It's free and easy to join! As an Alamo Insider, you'll save 5% off base rates of pay later reservations." The footnote limits that to Pay Later retail rates in the United States, Canada, Mexico, Latin America and the Caribbean, and says the discount "applies only to the base rate charge (time and mileage)."
There are no points, no tiers and no free days on that page. If you rent Alamo, join it, because 5% off costs nothing. Just don't expect a balance to build.
The One We Couldn't Read
Sixt's loyalty program is missing from this guide on purpose. Every Sixt URL we tried, including its loyalty program page, its help-center articles and its own press release, returned an HTTP 403 "Access Blocked" response to us on September 11, 2026.
Numbers for Sixt's tiers circulate in search results. We don't publish figures we couldn't read on the company's own page, so Sixt stays out until we can.
Which One to Pick
If you rent often in the United States, take National. The credit-per-rental math rewards frequent short rentals, the Emerald Aisle benefit starts at the base tier, and status at 12 rentals is reachable for anyone renting monthly.
If your rentals are long or expensive, take Enterprise. Points per dollar beats credits per rental once your rentals run several days, and the 20% Platinum bonus compounds that.
If you want to know the redemption price in advance, take Avis. It's the only chart here that tells you what a reward day costs before you start.
If you rent Hertz anyway, join Gold Plus. It's free, the 950-point threshold is clear, and the counter benefits are real. Watch the twelve-month inactivity rule, which is stricter than the five-year expiry most people quote.
Join Alamo Insiders regardless. It's a free 5% on the base rate.
Paying for the Rental
The program is only half of it. The card you pay with decides your insurance coverage and your points on the spend, and one of those changed recently: our piece on Chase's rental car coverage limits covers what cardholders lost.
For the booking itself, price the loyalty rate against the discounters before you book. Our guides to Costco Travel rentals and Hotwire's opaque model both show cases where the cheaper booking beats the points you'd have earned.
One last rule, from the programs themselves: most let you take airline miles or hotel points instead of rental credits. National says so on its benefits page. If you're two nights from a hotel award, take the points. If you rent enough to earn free days, take the free days. Don't split the difference across a year and end up short of both.
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