Key takeaways
- In many places the line is drawn between general nutrition education and individualised treatment of a medical condition, not between "mentioning calories" and silence.
- Rules differ by country and, in the US, by state, so a coach should confirm local scope-of-practice and insurance terms rather than assume.
- A formula-based estimate from TDEE with a 15–20% deficit is a population-level starting point a client adjusts from their own weight trend.
- Any client with diabetes, kidney disease, an eating-disorder history, pregnancy or medication that affects intake should be referred, not coached on calories.
- Writing the method and the referral rules down protects both the client and the coach.
Coaches can usually share general calorie and macro estimates as education, but cannot always prescribe an individual diet to treat a medical condition. Where exactly that line sits depends on your country, state and credential, so the safe pattern is to teach the method, keep to healthy adults, and refer out anything clinical.
This is not legal advice
Scope-of-practice rules for nutrition advice vary by jurisdiction and change. Check your local regulator or professional body, your certification's code of practice and your liability insurer before you set client targets. Clients with medical conditions should be directed to their clinician or a registered dietitian.
Can a personal trainer or coach give calorie targets?
Often yes, as general education for healthy adults, but it depends on where you work. In the US, dietetics and nutrition laws are set state by state: some restrict individualised nutrition counselling to licensed professionals, while others protect only the title "dietitian" and allow coaches to give general guidance. Many other countries regulate titles rather than the activity.
Because of that patchwork, "can I?" has no single answer. What does hold across most rules is the distinction in the table below.
| Typically within a coach's lane | Typically needs a licensed professional |
|---|---|
| Explaining what calories, protein and TDEE are | Treating or managing a diagnosed condition with diet |
| Estimating maintenance calories from a formula | Meal plans for diabetes, kidney disease or digestive disorders |
| Suggesting a moderate deficit for a healthy adult | Clients with an eating-disorder history or pregnancy |
| Teaching logging and reading a weight trend | Adjusting intake around medication |
A general pattern, not a legal ruling. Confirm against your own jurisdiction.
How do you set a client's calorie target safely?
Start from an estimated maintenance figure and take a modest percentage off, rather than choosing a number by feel. The widely used Mifflin-St Jeor equation estimates basal needs from weight, height, age and sex, and multiplying by an activity factor gives total daily energy expenditure. You can run it in the free TDEE calculator.
Our guide to calories to lose weight sizes a deficit at 15–20% of TDEE, aiming for about 0.5–1% of body weight lost per week, with commonly cited floors of about 1,200 kcal a day for women and 1,500 for men.
15–20%
Deficit as a share of TDEE
healthy adults
0.5–1%
Body weight lost per week
a target ceiling
As an illustration, a client with an estimated TDEE of 2,200 kcal gets a starting range of 1,760–1,870 kcal (a 15–20% deficit). That figure is a hypothesis: the client's own two-to-three-week weight trend, not the formula, decides whether it moves.
Targets and logs in one place
2BIB group plans give each member their own TDEE-based target and AI photo logging, while you see their log under your own branding.
When should you refer a client to a dietitian?
Refer whenever food advice would interact with a medical condition, medication or a vulnerable stage of life. A short screening question at intake, plus a clear written rule, makes this routine instead of awkward. Refer, or ask for written clearance from their clinician, when a client:
- 1Has diabetes, kidney or liver disease, or a digestive or metabolic disorder.
- 2Takes medication that affects appetite, blood sugar or blood pressure, including GLP-1 drugs.
- 3Is pregnant, breastfeeding, or under 18.
- 4Has a history of, or shows signs of, disordered eating.
- 5Needs a target below the calorie floors above.
The same logic applies to clients on GLP-1 medication, where the prescribing clinician sets the framework and a coach supports protein and training within it.
How do you frame targets as education, not prescription?
Present every number as an estimate the client owns and tests, not an order. Four habits keep the framing honest:
- 1Show the method, such as TDEE minus a percentage, so the client can reproduce it.
- 2Use language like "a starting estimate" and "we will adjust from your trend".
- 3Put your scope, referral rules and disclaimer in your written client agreement.
- 4Keep records of what you shared and when, and avoid claims about treating or curing anything.
Targets only work if clients keep logging, which is its own problem; see why clients stop logging food. For protein and fat splits, the free macro calculator shows the same method.
The short version
Teach the method, keep to healthy adults, set a modest deficit from TDEE, and let the client's weight trend refine it. Refer anything clinical, put your scope in writing, and check local rules and insurance before you rely on this framework.