Donor Egg Success Rates by Age: What to Know After 40

The short answer

Donor eggs hold their success rate as recipients get older, which is what makes them an option after 40. In a 2025 U.S. study, live birth rates after the transfer of a chromosomally normal donor egg embryo stayed between 45% and 49% from age 38 through 45 and older.⁴

With your own eggs the picture changes year by year: the highest cumulative live birth rate across every cycle completed was 9.7% at 43 and 5.0% at 45.¹ Your age still plays a part with donor eggs, mostly through the uterus and pregnancy risks, and this guide works through where it does and where it does not.

If you are in your 40s and have been through two or more IVF cycles with your own eggs, you have probably reached the point where hope and exhaustion sit side by side, and the question on your mind is a practical one: which next step gives you a realistic chance at the family you have been working so hard toward?

Donor eggs change one of the most important variables in IVF, which is the age of the egg. Our overview of donor egg success rates covers the national picture across all ages. This guide covers what recent research says about donor egg success rates after 40, where your own age still plays a part, how fresh and frozen donor eggs compare, and which questions are worth bringing to your next appointment. We cannot promise an outcome that no one controls, but we can help you see your options clearly and take care of the complicated parts of whichever path you choose.

Do donor eggs improve IVF success rates after 40?

For most women over 40, donor eggs offer a substantially better chance of a live birth than continuing IVF with their own eggs, mainly because eggs from a younger donor are far less likely to produce embryos with chromosomal errors. In a large U.S. study of women over 42 using their own eggs, the highest cumulative live birth rate reached 9.7% at age 43 and 5.0% at 45¹, while a 2025 U.S. study of donor egg embryos found live birth rates of 45% to 49% per euploid embryo transfer for recipients from 38 to 45 and older⁴. Those two figures measure different things, so they are not a head-to-head comparison, but the size of the gap helps explain why so many fertility specialists raise donor eggs after repeated unsuccessful cycles.

Your own health still shapes the outcome, since uterine health, medical history, embryo quality, the transfer protocol, and pregnancy-related risks all matter, and several recent studies show that recipient age has a gradual effect even when the eggs come from a donor^5,6.

Here is a quick look at the research covered in this article.

Your question	What the research found
Do more retrievals with my own eggs help after 42?	Each extra cycle helped less as age increased. The highest cumulative live birth rate was 9.7% at 43, 5.0% at 45, and 3.6% at 461
Is a younger egg donor always better?	Among donors 18 to 34, age was not linked to the share of chromosomally normal blastocysts, so the youngest donor is not automatically the best match2
Does my age matter with a donor egg embryo?	Its effect is gradual. Live birth rates after a euploid donor egg transfer stayed between 45% and 49% from 38 to 45 and older in one U.S. study4, while a larger Spanish study found implantation failure and pregnancy loss rising gradually each year after 405
Are donor eggs an option after 45?	They can be, alongside a careful health evaluation. A national registry of 1,226 transfers in women 45 and older found cumulative live birth rates of 58.0% at 45 to 46 and 54.2% at 50 and older8

What can two or more failed IVF cycles tell you?

Two unsuccessful cycles can leave you worn down by the injections, the cost, and the waiting, and it is completely understandable to grieve the possibility that your own eggs may not be the most effective way forward. Those cycles also hold real information, and your fertility specialist can use it to help you decide whether another retrieval makes sense. If you are still in the thick of that decision, our guide to what happens after IVF fails talks through the emotional side as well as the medical one.

Questions your past cycles can help answer

• How many mature eggs were retrieved, and how many of them fertilized?
• How many embryos reached the blastocyst stage?
• Were embryos tested with PGT-A, and if a euploid embryo was transferred, did it implant?
• Could uterine, hormonal, sperm-related, or laboratory factors have played a role?

Do more IVF cycles with your own eggs help after 42?

Additional cycles tend to help less as age increases, according to researchers who analyzed SART data on 24,650 women over 42 who went through 58,132 IVF cycles with their own eggs between 2014 and 2020¹. In that study, the highest cumulative live birth rate, meaning the chance of at least one baby across every cycle a woman completed, fell from 9.7% at 43 to 3.6% at 46, and the point where additional cycles stopped making a meaningful difference came earlier as age increased.

Age at treatment	Highest cumulative live birth rate with own eggs	When additional cycles stopped adding meaningfully
43	9.7%	After about 5 cycles
44	8.6%	After about 5 cycles
45	5.0%	By the 3rd cycle
46	3.6%	By the 3rd cycle
47 and older	1.3% to 2.7%	After the 1st cycle

These numbers say nothing about how hard you have tried, and they can give you and your doctor a grounded starting point for talking about whether another retrieval with your own eggs is likely to change the outcome. Our article on how many failed IVF cycles is too many goes deeper into that decision.

Why do donor eggs change the odds after 40?

Egg quality declines with age largely because older eggs are more likely to create aneuploid embryos, meaning embryos with an extra or missing chromosome. Aneuploid embryos are less likely to implant and more likely to end in miscarriage, so when a younger donor provides the eggs, embryo development begins from much more favorable conditions. PGT-A testing is one way clinics check embryos for these chromosome differences before transfer.

Is a younger egg donor always better?

Younger is not automatically better, according to a study of donor cycles from 2015 to 2018 that found donor age between 18 and 34 was not correlated with the rate of chromosomally normal blastocysts, and donors 25 and younger did not have better results than donors 26 to 30². That finding supports what careful donor programs already do by focusing on health, screening results, and individual eligibility when evaluating donors. Donor Nexus donors are generally 19 to 30, with women in their early 30s considered case by case, usually proven donors who have donated before, and every donor completes medical, genetic, and psychological egg donor screening before she is matched.

Donor egg success rates by age: does your age still matter?

It does, although the effect is much smaller than the effect of egg age, and the studies below show where recipient age comes into the picture.

What does euploid embryo research show?

A euploid embryo has been tested with PGT-A and found to have the expected number of chromosomes. That is valuable information, but it does not guarantee implantation or a live birth. A 2023 systematic review and meta-analysis of seven studies covering 11,335 euploid embryo transfers found that success rates declined with maternal age even when the embryo was chromosomally normal³.

Donor eggs appear to change that pattern, based on a 2025 study from a multicenter U.S. fertility practice that analyzed 15,013 first single euploid frozen embryo transfers from 2010 to 2023, 1,130 of which used embryos made from donor eggs⁴. For patients using their own eggs, live birth rates fell with each age group, from 55.8% at 35 to 37 down to 43.4% at 45 and older. In the donor egg group, the researchers found no statistically significant decline across recipient age groups.

Keep in mind that the own-egg figures only include women who had a euploid embryo to transfer, which becomes much harder to reach after 42. Because this was a retrospective study with smaller numbers in some donor age groups, it cannot predict an individual result, though it does help explain why donor eggs are often the next conversation after repeated cycles with your own eggs have not worked.

Can age affect the uterus even with donor eggs?

Several large studies suggest it can, including a 2025 analysis of 33,141 donor egg embryo transfers across 19 clinics in Spain, which found that after age 40 the relative risk of implantation failure rose by 4.2% per year and the relative risk of pregnancy loss by 3.2% per year, and the authors pointed to age-related uterine factors as a likely contributor⁵. A separate 2025 study of 1,660 single embryo transfers using donor eggs in patients 40 and older also found that live births were significantly less likely at ages 45 to 49 than at 40 to 44⁶.

The effect appears to build slowly over time. In a 2026 study of 2,760 single blastocyst transfers with donor eggs, cumulative live birth rates were 80.0% for recipients 35 to 40 and 62.5% for recipients over 49, with the most meaningful drop showing up after 49⁷. Taken together, the research suggests donor eggs substantially improve the embryo side of the equation, and your uterine health, medical history, and prenatal care stay important at every age.

What are donor egg success rates after 45?

Donor eggs can remain a viable option after 45, and your care team should talk with you about treatment success and pregnancy safety together. A nationwide registry study from Taiwan followed 745 women age 45 and older through 1,226 donor egg embryo transfers between 2007 and 2016 and found a live birth rate of about 40% that held steady across the study period⁸. Cumulative live birth rates were 58.0% for recipients 45 to 46 and 54.2% for those 50 and older, a difference that was not statistically significant, and the authors recommend single embryo transfer to lower the chance of a twin pregnancy.

Pregnancy health deserves its own conversation at this stage. The American Society for Reproductive Medicine recommends that women of advanced reproductive age who plan to carry a pregnancy have comprehensive testing focused on cardiovascular and metabolic fitness before treatment, and its 2025 opinion notes that complications such as high blood pressure, gestational diabetes, and preterm birth become more common with age⁹. None of these numbers can replace an individual clinical assessment, which is the right place to decide whether and how to move forward.

Should you choose fresh or frozen donor eggs?

There is no universal answer, because the better fit depends on your timeline, diagnosis, clinic protocol, how many children you hope to have, and whether you plan to test embryos. Donor Nexus offers both the Fresh Matching Program and a frozen donor egg bank, and one team coordinates either path.

For a deeper comparison, see our guide to fresh vs. frozen donor egg success rates and our side-by-side comparison of cost, timeline and logistics, and if you are wondering how many eggs you actually need, this breakdown of donor egg numbers walks through the science.

Donor Nexus fresh matching outcomes

The most useful way to evaluate any donor egg program is to ask for real program data, understand what each figure measures, and talk through what it can and cannot tell you about your own plan. Here are the averages for Donor Nexus fresh matching cycles from 2012 through 2025.

Pregnancy and live birth results from fresh cycles are followed by each recipient's fertility clinic, which is why these averages describe eggs and embryos.

Donor Nexus frozen egg bank outcomes

These are the results for Donor Nexus frozen egg bank cycles from 2012 through 2025.

Program outcomes like these describe what has happened across many cycles, so they are not a guaranteed number of embryos or a guaranteed live birth for any one recipient, and your clinic is the right place to evaluate the factors specific to your treatment. You can see every figure in context on our donor egg success rates page¹¹.

What should you ask your fertility specialist next?

A good next appointment should leave you with more clarity than you walked in with, and these questions can help you get there.

• What did my previous cycles show about egg quality, embryo development, and implantation?
• Is another retrieval with my own eggs likely to meaningfully improve my chance of a live birth?
• Should we evaluate my uterus before another embryo transfer?
• Are donor eggs medically appropriate for me, and would fresh matching or frozen eggs better fit my timeline?
• Do you recommend PGT-A in my situation?
• What pregnancy health screening should I complete before a transfer?
• Would single embryo transfer be the safest approach for me?

If you are comparing donor egg programs at the same time, our list of questions to ask before you choose an egg donor agency pairs well with that appointment.

How Donor Nexus helps once you decide

By the time you are reading about donor eggs, you have already pursued treatment, made hard decisions, and kept going through months of uncertainty. Everything those cycles taught you carries into this next step, and you do not have to manage the logistics of it on your own.

Donor Nexus offers the Fresh Matching Program and a frozen donor egg bank, backed by a team that understands clinical timelines, donor coordination, and the details that keep a cycle moving. We have completed more than 900 egg retrievals, retrieved more than 26,000 eggs, and supported more than 2,000 babies born across our programs. We are an FDA-registered egg bank, hold a California tissue bank license, and work with more than 150 partner clinics worldwide. When you are ready to see who is available, you can register to browse our donor profiles.