How a plant-based diet could slash your monthly food budget

With food prices staying stubbornly high, it feels like every trip to the store costs more than the last. Many people assume that trying to eat healthier—especially adopting a plant-based diet—will only make their wallets lighter.

In fact, a recent survey by the Physicians Committee for Responsible Medicine found that more than 60% of U.S. adults incorrectly think a plant-based diet is more expensive than a standard one.

But what if I told you the research shows the exact opposite? A 2024 study published in the prestigious JAMA Network Open found that switching to a low-fat vegan diet could reduce food costs by 19%, resulting in savings of over $650 per year.

Here’s a breakdown of exactly where these savings come from, how to sidestep the expensive traps, and how you can start saving money this week with a few simple, expert-backed swaps.

The research is in: a plant-based diet is officially cheaper

This isn’t just a guess—it’s backed by serious science. The 2024 study from the Physicians Committee for Responsible Medicine (PCRM) wasn’t a simple survey. It was a randomized clinical trial where researchers tracked what people actually ate and then linked their food diaries to national price data from the U.S. Department of Agriculture.

The results were crystal clear. People on a low-fat vegan diet saved approximately $1.80 per day compared to those following a standard American diet. That adds up to over $650 a year.

And get this: the vegan diet was even cheaper than the popular Mediterranean diet. The study found that the Mediterranean diet was actually 25% more expensive, meaning you could save over $870 a year by choosing a plant-based diet instead.

Dr. Hana Kahleova, the study’s lead author, put it plainly: “As the cost of groceries remains stubbornly high, consumers should swap the meat and dairy products for a low-fat vegan diet based on fruits, vegetables, grains, and beans.“

This isn’t a one-off finding, either. A massive 2021 study from Oxford University examined diets in 150 countries and reached the same conclusion. In high-income nations like the U.S., vegan diets were the most affordable option, slashing food bills by up to one-third.

Where the savings really come from

How is this possible? The math is surprisingly simple. The PCRM study broke it down. The vast savings from cutting out meat (an average of $2.90 per day) and dairy (50 cents per day) easily covered the small extra cost of buying more vegetables (an additional 50 cents per day) and grains (an additional 30 cents per day). You’re trading expensive items for some of the most affordable foods in the entire grocery store.

But the financial benefits don’t stop at the checkout line. As Dr. Kahleova notes, “A vegan diet won’t just save money; it could save lives by helping to avoid or improve conditions like obesity, type 2 diabetes, and heart disease.” Think about the long-term savings on medical bills. As certified financial planner Katie Cummings warns, “One thing that really derails a financial plan is a long-term care event.” Eating this way isn’t just a diet; it’s a form of preventative financial planning.

But aren’t vegan meat and cheese expensive?

The difference between whole foods and processed alternatives

Okay, let’s address the elephant in the room: those fancy veggie burgers. You’ve seen them in the freezer aisle, and you’re right—they can be pricey. This is the single biggest reason people think plant-based eating is expensive.

And the data backs you up. Nielsen data shows that, on average, plant-based meat is twice as expensive as beef, more than three times as expensive as pork, and over four times as expensive as chicken per pound.

So, what gives? The secret lies in understanding the difference between a diet based on whole plant foods and one that relies on processed alternatives.

Registered dietitian Xavier Toledo says it best: “Centering a plant-based diet on whole, minimally processed foods is one of the most effective ways to not only nourish your body, but also cut grocery costs.“ The savings found in the big studies come from eating things like beans, lentils, rice, and vegetables—not from swapping a beef burger for a $10 plant-based patty every night.

Consider expensive vegan products as occasional treats, rather than daily essentials. Dietitian Kelsey Lorencz advises to “avoid using a lot of plant-based convenience foods such as mock meats and cheeses, as the price can be pretty hefty.” Another expert suggests treating them as “accents rather than anchors” for your meals. After all, if your current diet were based on filet mignon and imported cheese, it would be expensive, too.

A real-world meal showdown: what you’ll actually save

Tacos: beef vs. lentils

Let’s move from the lab to your dinner table. To see how this plays out in real life, let’s compare the cost of making tacos for a family of four.

We’ll use current average prices: about $5.80 per pound for ground beef and around $1.50 per pound of dry lentils, which cook up to make more than enough filling. That’s a massive difference for a single meal. The savings are immediate and undeniable.

Chili: ground beef vs. three-bean

This isn’t a one-trick pony; the savings apply across countless meals. Take chili, for example. The Physicians Committee for Responsible Medicine calculated that a hearty, protein-packed three-bean chili can cost as little as $1 per serving—way less than a version made with ground beef.

Toni Okamoto, founder of the blog Plant-Based on a Budget, offers this simple advice: “…if you like beef tacos, try using lentils instead. They’re heart-healthier and much cheaper.”

Your budget-friendly playbook: tips from the experts

Build meals around pantry powerhouses

The foundation of an affordable plant-based diet is a well-stocked pantry. Forget fancy ingredients. We’re talking about the cheapest, most versatile foods you can buy: beans, lentils, tofu, brown rice, oats, and potatoes.

“Build meals around starches,” advises dietitian Toledo. “A bag of dried brown rice can stretch into a dozen meals for just a few bucks.”

And don’t worry about protein. A ½ cup serving of black beans packs about 8 grams of protein, while lentils have a whopping 18 grams. Tofu is another budget superstar, with prices often ranging from $1.50 to $2.50 for a 16-ounce block.

Master the grocery store aisles

• Frozen & Canned Are Your Friends. Forget the myth that you have to buy everything from the fresh produce section. “You don’t have to buy all fresh produce to eat well,” one dietitian confirms. Frozen fruits and vegetables are picked at their peak, locking in nutrients, and they won’t spoil in your fridge. Canned beans are a lifesaver for quick and affordable meals.
• Shop Seasonally. Why are strawberries so cheap in June and so expensive in December? Supply and demand. Eating what’s in season is one of the easiest ways to save money. A quick online search for a “seasonal food guide” can tell you what’s currently in season and what’s the most affordable.
• Hit the Bulk Bins. For pantry staples like rice, oats, and dried beans, the bulk aisle is your best friend. You can buy exactly what you need and save compared to pre-packaged goods.
• Embrace Store Brands. That store-brand can of chickpeas or carton of almond milk is often made in the same factory as the name-brand version, just without the fancy label and higher price tag.

Cook smart to stop wasting money

• Plan Your Meals. This is the number one tip from nearly every single expert. “Before shopping, always create your upcoming week’s meal plan,” says dietitian Beth Stark. “This step prevents you from buying duplicate ingredients that might go to waste, ultimately causing you to throw dollars right in the trash.“
• Batch Cook Everything. Spend an hour or two on Sunday making a big pot of chili, cooking a large batch of quinoa, or roasting a tray of vegetables. Having ready-to-go components is your best defense against the siren song of expensive, last-minute takeout.
• Reduce Food Waste. Use your entire vegetable (broccoli stems are great in stir-fries!), freeze produce before it spoils, and always check what’s in your fridge before heading to the store.

This is more than a trend: why America is eating more plants

A look at the bigger picture

If you’re thinking about eating more plants, you’re in good company. This is no longer a niche movement. The U.S. plant-based food market is now a massive $8.1 billion industry.

It’s officially mainstream. In 2024, 59% of all U.S. households purchased plant-based foods. And it’s becoming a habit—four in ten American households now regularly buy plant-based milk.

Interestingly, this shift isn’t being driven by a massive boom in strict veganism, which remains steady at around 1-4% of the population. Instead, it’s powered by the rise of the “flexitarian“—someone who is consciously reducing their meat intake.

Today, approximately one-third of U.S. adults are actively trying to reduce their meat consumption, and data from The Good Food Institute indicate that 96% of people who purchase plant-based meat also buy conventional beef. This means you don’t have to go all-or-nothing to reap the financial and health rewards.

Key Takeaway

• The Myth is Busted: Top-tier research confirms it: a plant-based diet centered on whole foods is significantly cheaper than a standard American diet, saving the average person over $650 a year.
• Focus on Staples, Not Specialties: The real savings come from budget-friendly powerhouses like beans, lentils, tofu, and brown rice—not expensive processed meat and cheese alternatives.
• Simple Swaps, Big Savings: Replacing ground beef with lentils in tacos or chili just a few times a month can immediately slash your grocery spending.
• Plan: The number one expert tip to maximize your savings is to plan your meals, cook in batches, and use your freezer to minimize food waste and avoid costly impulse buys.

Disclaimer – This list is solely the author’s opinion based on research and publicly available information. It is not intended to be professional advice.

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