Cutting at a 30% Deficit (Fast): The Female Guide
How long does a 30% calorie deficit take for women? See weekly projections, daily calories (~1485 cal), macro split, and timeline for the Fast cutting plan. 4-6 weeks.
Last updated: February 8, 2026
Plan Overview
Deficit
30%
Fast
Difficulty
Duration
4-6 weeks
A larger calorie change for quicker progress that can feel more demanding.
Daily Calories and Macros
Based on a 5'5", 150 lb woman at moderate activity (2,122 cal TDEE):
1,485
Daily Calories
102g
Protein (27%)
177g
Carbs (48%)
41g
Fat (25%)
Weekly Projections
| Week | Weight | Body Fat % | Fat Mass | Lean Mass |
|---|---|---|---|---|
| Start | 150 lbs | 32% | 48 lbs | 102 lbs |
| Week 1 | 148.7 lbs | 31.5% | 46.9 lbs | 101.8 lbs |
| Week 2 | 147.5 lbs | 31.1% | 45.8 lbs | 101.6 lbs |
| Week 3 | 146.2 lbs | 30.6% | 44.8 lbs | 101.4 lbs |
| Week 4 | 144.9 lbs | 30.1% | 43.7 lbs | 101.2 lbs |
| Week 5 | 143.7 lbs | 29.7% | 42.6 lbs | 101 lbs |
| Week 6 | 142.4 lbs | 29.2% | 41.5 lbs | 100.9 lbs |
Risk and Suitability
Risk Level
Moderate-HighModerate. At this deficit, muscle loss becomes a real concern. Prioritize protein, maintain heavy compound lifts, and keep the phase short.
Suitable For
Advanced women with prior cutting experience. Best for short targeted pushes when you are close to your goal. Requires strong meal prep habits and training discipline.
Not Recommended For
Beginners. People with less than 6 months of consistent training. Those who tend to binge after restriction. Anyone with hormonal or metabolic health concerns.
Adherence Tips
- •Track your food intake daily. What gets measured gets managed.
- •Eat at least 100g of protein every day to protect lean mass.
- •Pre-plan every meal. At this deficit, unplanned eating almost always leads to going over your target.
- •Keep training volume the same but reduce intensity by 10-15%. Your recovery capacity is reduced.
- •Schedule a diet break after 4-6 weeks. Two weeks at maintenance calories before continuing.
Diet Break Recommendation
Take a full week at maintenance calories after 4 weeks. Your body needs the recovery to maintain metabolic rate and hormonal function.
Frequently Asked Questions
Will I lose muscle on a 30% deficit?
Moderate. At this deficit, muscle loss becomes a real concern. Prioritize protein, maintain heavy compound lifts, and keep the phase short.
How long should I stay on a 30% deficit?
The recommended duration for a 30% deficit is 4-6 weeks. Extending beyond this window increases the risk of muscle loss, metabolic adaptation, and diet fatigue.
What is a 30% calorie deficit?
A 30% deficit means eating 30% fewer calories than your body burns each day (your TDEE). For example, if your TDEE is 2,500 calories, a 30% deficit means eating 1750 calories per day.
Should I do cardio while cutting at 30%?
Be careful with cardio at a 30% deficit. Your total energy output is already high from the calorie restriction. Adding aggressive cardio increases recovery demands and can accelerate muscle loss. Stick to 2-3 low-intensity walks per week (20-30 minutes).
Related Pages
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