Success rates

IVF success rates by age, honestly

National IVF live-birth rates by age from the CDC, what the different success numbers actually mean, and per-clinic rates as they are reported. Every figure links to its source.

Updated monthly · checked 34 h ago
457clinics indexed
3trials with results

Nationally, IVF results in a live birth in about 49.7% of cycles for patients under 35, falling to roughly 7.7% for patients over 40 (live birth per intended egg retrieval, using a patient's own eggs). With donor eggs that age effect largely disappears, with success near half at any recipient age. These are population averages from the CDC that depend heavily on age and diagnosis, not a guarantee for any individual. See your age band's odds next to a real cost estimate.

Success rates

IVF success rate by age

National average live births per intended egg retrieval, by the patient's age, from the CDC's national ART data. Population averages, never a single clinic's result.

Live birth per intended egg retrieval

Bar length is the real live-birth probability on a 0–100% scale (the tick marks the halfway, coin-flip line). These are the CDC's published national averages from its 2022 ART National Summary (the latest reporting year), not a clinic result or a guarantee, and they vary widely by individual (diagnosis, egg source, clinic, and cycle count). Rates use a patient's own eggs; donor-egg outcomes differ.

Read it right

Which success rate? The denominator decides

The same clinic can honestly quote very different success numbers depending on what it divides by. Knowing which one you are reading is the difference between a fair comparison and a misleading one.

  • Per cycle startedmost conservative

    Divides by every cycle begun, including those cancelled before egg retrieval. The least-flattering number, and the one that reflects the full journey.

  • Per intended egg retrievalshown on this site

    Divides by each retrieval a patient intends. This is the honest, patient-facing denominator the CDC reports, and the one every figure on IVFcost.co uses, so the clinics here always compare like with like.

  • Per embryo transferlooks highest

    Divides only by cycles that reached a transfer, dropping every cycle that produced no usable embryo. It can look roughly twice as high as the per-retrieval number, which is why clinic marketing tends to quote it. A 55% rate "per transfer" is not the same measure as a 30% rate per retrieval. Most transfers today are frozen: see our frozen embryo transfer guide.

  • Cumulative across cycleswhat to budget on

    The chance of a live birth after more than one cycle. Because most patients need more than one, this is the number that matters for a budget. Our cost calculator shows it beside your cost.

One caveat no denominator fixes: a clinic that treats younger, simpler cases posts higher numbers than one that takes on hard cases, regardless of lab quality, so a headline rate reflects a clinic's case mix as much as its skill. Denominators follow the CDC ART and SART reporting definitions. Read the full explainer.

Per clinic

Reported success rates by clinic

Clinic-level live-birth rates per intended egg retrieval from the CDC ART program, for patients using their own eggs. Clinics self-report these to the CDC, which publishes them in arrears, so the newest figures describe cycles from a few years back.

The CDC reports a live-birth rate per intended egg retrieval for 394 of the 457 US fertility clinics we track. Below are the 12 largest by total ART cycles in the CDC's 2022 data, at every age band. A clinic's rate reflects the patients it treats as well as its lab, so compare clinics within one age band.

Source: CDC ART Success Rates (NASS) · as of Sep 29, 2026

Every other clinic's rates are on its own page. Compare all 457 clinics at your age band, or browse by state:

Source: CDC / NASS. Success rates are clinic and national averages that vary by individual circumstances (age, diagnosis, and history) and are not a guarantee of any personal outcome.
Registered trials

Recent fertility trials with posted results

Reproductive-medicine studies on ClinicalTrials.gov that have reported outcomes, newest first. A posted result is a stronger signal than a registration alone.

Source: ClinicalTrials.gov API v2 · as of Sep 29, 2026

Success rates are population averages from the CDC that vary by age, diagnosis, egg source, and clinic, and are not a guarantee. A registered trial or a posted result reflects research activity, not a clinic's outcomes. Informational only, not medical advice. Success rates vary by individual; confirm with a clinician.