Macros for Cutting: The Exact Split to Lose Fat and Keep Muscle
Cutting is simple in theory: eat fewer calories than you burn while keeping protein high enough to protect muscle. In practice, most people cut with too big a deficit, too little protein, and a plan they abandon in three weeks. This guide gives you the exact macro framework that works, with real numbers you can copy.
Cutting vs. Crash Dieting
A proper cut is a moderate, sustained calorie deficit paired with resistance training and high protein. Crash dieting is a massive deficit with no plan, which burns muscle along with fat and rebounds hard.
The difference shows up in the mirror: a good cut reveals muscle; a crash diet just makes you a smaller, softer version of yourself. Macros are what separate the two.
Step 1: Set Your Deficit (Not Too Aggressive)
Start from maintenance calories (find yours with our TDEE calculator) and subtract:
- Standard cut: 300 to 500 calories below maintenance. Expect 0.5 to 1 pound of fat loss per week.
- Aggressive cut: 500 to 750 below, only if you have significant fat to lose and can handle the hunger. Not for lean people.
- Slow cut: 200 to 300 below. Best for people who are already fairly lean and want to preserve maximum muscle and performance.
Bigger deficits are not faster in any way that matters. A 1,000-calorie deficit loses more scale weight, but a bigger share is muscle and water, and adherence collapses. The person in a 400-calorie deficit for 16 weeks beats the person who quits a 900-calorie deficit in week four.
Step 2: Protein Goes High (This Is the Whole Game)
During a cut, protein is your number one priority. Target 1 to 1.2 grams per pound of body weight (2.2 to 2.6 g/kg). If you are very lean already, stay at the top of that range.
Why so high? In a deficit, your body looks for energy anywhere, including muscle tissue. High protein plus lifting weights tells your body to burn fat instead. Protein also keeps you fuller than carbs or fat, which matters enormously when calories are restricted.
A 200-pound person cutting should eat roughly 200 to 240 grams of protein daily. Yes, that is a lot of chicken, Greek yogurt, and whey. It is also the single biggest lever in your cut.
Step 3: Set Fat at a Moderate Floor
Keep fat at 0.3 to 0.5 grams per pound of body weight, or 20 to 30 percent of calories. For our 200-pound person eating 2,400 calories, that is roughly 60 to 80 grams of fat.
Do not cut fat to near zero chasing faster loss. Adequate fat supports testosterone and other hormones, and going too low makes you feel terrible, which is when diets die. If you feel constantly cold, irritable, and your libido vanishes, your fat (or total calories) is too low.
Step 4: Carbs Fill Whatever Is Left
Carbs are the flexible macro during a cut. After protein and fat are set, remaining calories become carbs: (Total calories minus protein calories minus fat calories) divided by 4.
Our 200-pound example: 2,400 calories, 220g protein (880 cal), 70g fat (630 cal). Remaining: 890 calories, about 222g carbs.
Keep carbs as high as your deficit allows for as long as possible. Carbs fuel training, and training preserves muscle. People who slash carbs to zero on day one usually feel flat in the gym within two weeks and then blame the cut instead of the carb cut.
Example Cutting Macros (200 lb Person)
- Maintenance: ~2,900 calories (active lifter)
- Cutting target: 2,400 calories (500 deficit)
- Protein: 220g (880 cal)
- Fat: 70g (630 cal)
- Carbs: 222g (888 cal)
A lighter 150-pound person with a 2,000-calorie target might run: 165g protein, 55g fat, 200g carbs. Run your own numbers in the macro calculator in under a minute.
Training During a Cut
Lift weights 3 to 5 times per week and aim to maintain your strength. You probably will not build much new muscle in a deficit (beginners excepted), so strength maintenance is victory.
Keep protein high around workouts, but total daily protein matters far more than precise timing. A shake or meal with 30 to 50 grams of protein within a couple of hours of training is plenty.
Add walking: 8,000 to 10,000 steps daily is the secret weapon of every successful cut. It burns meaningful calories without impairing recovery the way extra cardio sessions can. If you add formal cardio, start with 2 to 3 short sessions per week and increase only when fat loss stalls.
Refeeds and Diet Breaks: When They Help
A refeed is 1 to 2 days at maintenance calories (extra carbs, protein steady) during a long cut. It is mostly psychological: a break from restriction that improves adherence. The metabolic effect is small and temporary, so treat refeeds as a morale tool, not a fat-loss accelerator.
A diet break is 1 to 2 weeks at maintenance after 8 to 12 weeks of cutting. This is genuinely useful: it reduces diet fatigue, restores training performance, and makes the next cutting phase more productive. Plan them in advance instead of waiting until you crack.
How Long Should a Cut Last?
Most cuts run 8 to 16 weeks. Longer than 20 weeks in a continuous deficit and adherence, hormones, and sanity all suffer. If you have a lot to lose, plan it in phases: 12 weeks cutting, 2 to 4 weeks at maintenance, repeat.
End the cut when you hit your body fat goal, when progress stalls for 3-plus weeks despite adjustments, or when you feel worn down. Then reverse diet: add 100 to 150 calories per week until you reach new maintenance, rather than jumping straight back to old eating habits.
Adjusting When Fat Loss Stalls
Stalls are normal. After two to three weeks with no trend change:
- First: verify adherence. Are you actually hitting targets, or “mostly” hitting them? Untracked weekends erase weekday deficits.
- Second: add activity. Increase daily steps by 2,000 or add one cardio session before cutting more food.
- Third: cut 150 to 200 calories, taken from carbs or fat. Never cut protein during a stall.
Repeat this sequence. Most stalls resolve at step one or two.
Cutting Mistakes That Cost You Muscle
Starting the cut too aggressively. The leaner you get, the slower you should go. A 25 percent body fat person can handle a 750 deficit; a 12 percent person cannot.
Dropping protein to “save calories.” This is backwards. Protein is the last macro you cut, ever.
Doing tons of cardio and no lifting. Cardio burns calories; lifting tells your body what to keep. Without resistance training, a large share of weight lost is muscle.
No sleep. Under 7 hours of sleep, a bigger portion of weight loss comes from muscle instead of fat. Sleep is a cutting tool.
FAQ
What is the best macro split for cutting?
A proven starting point: protein at 1 to 1.2g per pound of body weight, fat at 0.3 to 0.5g per pound, and carbs filling the remaining calories. For most people this lands near 40 percent protein, 30 percent carbs, 30 percent fat, but the gram targets matter more than the percentages.
How fast should I lose weight while cutting?
Aim for 0.5 to 1 percent of body weight per week. A 200-pound person should lose 1 to 2 pounds weekly. Faster than that risks muscle loss; slower is fine if you prefer a gentler cut.
Should I do keto while cutting?
Only if you genuinely prefer eating that way. Keto works for cutting because it restricts calories, not because of metabolic magic. If you like carbs and train hard, a moderate-carb cut usually preserves more performance. Pick the approach you can sustain.
Can I build muscle while cutting?
Beginners, detrained lifters, and people with higher body fat can build some muscle in a deficit. Experienced lean lifters should aim to maintain muscle and strength, which is already a win while losing fat.
Why did my weight loss stop after a few weeks?
Early rapid loss is mostly water and glycogen. True stalls (2 to 3 weeks, no trend change) usually come from slipping adherence, metabolic adaptation, or both. Audit your tracking first, then add activity, then trim 150 to 200 calories. Our calorie deficit calculator can re-run your numbers.
Should carbs be lower on rest days?
It is optional. Some people drop carbs by 25 to 50 grams on rest days and add them back on training days (carb cycling). It can help hunger m
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