What Is BMI Requirements in Surrogacy?

Last updated: · · Based on data from 196+ surrogacy agency compensation packages

BMI requirements are the body mass index thresholds that surrogacy agencies and fertility clinics use to screen surrogate candidates. Most require a BMI under 32–33 at the time of application, though specific limits vary by agency and clinic.

Why BMI Requirements Matters for Surrogates

BMI is a rough screening tool — it's not a perfect measure of health, but clinics use it to assess risk. Higher BMIs are associated with greater anesthesia risk and certain pregnancy complications. If your BMI is near the cutoff, it's worth calculating precisely before applying to specific agencies.

How BMI Requirements Works in Surrogacy

Most agencies require a BMI under 32 at application, though some accept up to 33 or 34. The fertility clinic's threshold (which may be stricter than the agency's) is what ultimately matters for medical clearance.

BMI = (weight in pounds × 703) ÷ (height in inches)². Many surrogates successfully carry with BMIs in the 28–32 range without any complications.

Real-World Example

Agency BMI policies vary. Some specifically state their maximum. Others use it as a guideline with room for exceptions based on overall health. If you're borderline, ask the agency before investing time in the full application — some are more flexible than others, especially for experienced surrogates with no complications.

Frequently Asked Questions

What are BMI requirements for surrogacy?
Most surrogacy agencies and fertility clinics require surrogates to have a BMI under 32–35. Some clinics set stricter limits (under 30). BMI requirements exist because higher BMI is associated with increased pregnancy risks and can affect IVF success rates.
Can you be a surrogate with a high BMI?
It depends on the specific agency and fertility clinic. Some accept surrogates with BMI up to 35 if other health indicators are strong. Others have strict cutoffs at 30 or 32. If your BMI is borderline, some agencies will work with you on a weight management plan.
Why do surrogacy agencies have BMI limits?
BMI limits exist for medical safety — higher BMI increases risks of gestational diabetes, preeclampsia, c-section, and IVF failure. Fertility clinics set these requirements based on medical evidence to optimize outcomes for both the surrogate and the baby.

Related Surrogacy Terms

Medical Clearance Psychological Screening Surrogacy Agency
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Source: SurroScore's proprietary database of surrogate-reported compensation data and agency compensation packages, collected from direct agency outreach, public filings, and verified surrogate reviews. Data current as of March 2026.