Smart Balance is lower in saturated fat and calories than butter, which gives it an edge for heart health by most standard nutrition guidelines. But the full picture is more nuanced than “one is good, one is bad.” The best choice depends on how much you use, what you’re using it for, and which specific nutrients matter most to you.
Saturated Fat: The Biggest Difference
A tablespoon of regular butter contains about 7 grams of saturated fat. Smart Balance Original has roughly 2 to 3 grams per tablespoon. That’s a significant gap. Saturated fat raises LDL cholesterol (the kind linked to heart disease), so if your doctor has flagged your cholesterol numbers, switching from butter to a spread like Smart Balance can meaningfully reduce how much saturated fat you take in over the course of a day.
Butter also contains about 100 calories per tablespoon, while Smart Balance comes in closer to 60 to 80 calories depending on the variety. For someone who spreads it on toast every morning and uses it in cooking, that calorie difference adds up over weeks and months.
What About Trans Fats?
Margarines and buttery spreads earned a terrible reputation decades ago because they were made with partially hydrogenated oils, a major source of artificial trans fat. That concern is now outdated. The FDA banned partially hydrogenated oils from the U.S. food supply in 2018, and modern spreads like Smart Balance no longer contain them. This was the single biggest health knock against margarine-style products, and it no longer applies.
Plant Sterols and Cholesterol
Some Smart Balance products are fortified with plant sterols or stanols, compounds found naturally in plants that block cholesterol absorption in your gut. Research published in AHA journals found that consuming 2 to 3 grams of plant stanols daily lowered LDL cholesterol by about 10%. That’s a clinically meaningful reduction, comparable to what some people achieve with dietary changes alone.
Not every Smart Balance variety contains plant sterols, so you’d need to check the label. And to get the cholesterol-lowering benefit, you’d need to use the spread consistently at multiple meals, not just a small pat on weekend pancakes. Still, this is a genuine advantage that butter simply can’t offer. Butter contains cholesterol (about 30 milligrams per tablespoon), while plant-based spreads contain none.
Where Butter Has the Edge
Butter isn’t nutritionally empty. It’s a natural source of fat-soluble vitamins, particularly vitamin A. Grass-fed butter takes this further: it contains up to 500% more conjugated linoleic acid (CLA) than butter from grain-fed cows. CLA is a fatty acid that has shown anti-inflammatory properties in animal studies, though human research is less conclusive. Grass-fed butter is also richer in vitamin K2, a nutrient important for bone and heart health that’s relatively hard to find in the modern diet. It appears mainly in fermented foods and animal products from pasture-raised animals.
Grass-fed butter also provides more omega-3 fatty acids than conventional butter. Smart Balance contains some omega-3s from its oil blend (typically including canola and flaxseed oil), but the types and amounts differ from what you’d get in an animal fat. Neither product is a significant omega-3 source compared to fatty fish.
The broader point: butter delivers a package of naturally occurring fat-soluble nutrients that a processed spread doesn’t replicate. If you eat butter in small amounts and get plenty of fruits, vegetables, and fiber, those nutrients can be part of a healthy diet.
Processing and Ingredients
Smart Balance is made from a blend of vegetable oils (palm fruit, soybean, canola, and olive oil are common in the ingredient list) combined with water, emulsifiers, and added vitamins. It’s a manufactured product designed to mimic butter’s texture while improving the fat profile. Butter is cream that’s been churned, sometimes with added salt. If your priority is eating less processed food, butter is the simpler choice.
One ingredient worth noting in many spreads is palm oil, which is higher in saturated fat than other vegetable oils and carries environmental concerns related to deforestation. Smart Balance uses palm fruit oil in several of its products. It’s not a health red flag at the amounts present, but it’s worth knowing if sustainability factors into your choices.
Cooking and Baking Differences
Smart Balance and similar spreads contain more water than butter, which affects how they perform in the kitchen. Butter is about 80% fat, while many spreads run closer to 60% to 70% fat, with the rest being water and additives. For spreading on toast or melting over vegetables, you won’t notice much difference. For baking, the higher water content can change the texture of cookies, pastries, and pie crusts. Recipes that depend on butter’s fat content for flakiness or structure (think croissants or shortbread) generally don’t translate well to spreads.
If you primarily use butter as a spread or a finishing ingredient, switching to Smart Balance is straightforward. If you bake regularly and care about results, you may want to keep butter on hand for those recipes and use the spread elsewhere.
Which One Should You Choose?
For most people trying to manage cholesterol or reduce saturated fat intake, Smart Balance is the better everyday choice. It delivers less saturated fat per serving, zero cholesterol, fewer calories, and some versions add plant sterols that actively lower LDL. The old trans fat concern is no longer relevant.
Butter, particularly grass-fed, makes sense in smaller quantities for people who value whole-food ingredients and want the fat-soluble nutrients it provides. A tablespoon of butter on occasion isn’t a cardiovascular risk for someone who eats well overall. The trouble comes when butter is used liberally at every meal, pushing saturated fat intake well above recommended limits (the general guideline is to keep saturated fat under 10% of daily calories, which works out to roughly 20 grams on a 2,000-calorie diet).
The practical answer for many households: use Smart Balance as your default spread and keep a small amount of good-quality butter for cooking situations where it genuinely matters. You get the heart-health benefit where it counts most (daily, repeated use) without giving up butter entirely.