The ROI of a PhD

Is a PhD worth it? It’s a simple enough question, but the answer to that question– not so much. Time, money, mental toughness – these are all things that will be strained at some point during your PhD. While this sounds daunting, the return on investment a PhD can give you is huge. But are you willing to sow to reap the rewards later?

A PhD isn’t for everyone. If you’re still on the fence about doing a PhD, then this guide will help. We’re putting all the cards on the table so you can see the true ROI of a PhD.

The cost of a PhD can vary significantly depending on the university, country, and your field of study. Tuition fees for international students can range from £15,000 to £30,000 per year, while UK students typically pay between £4,000 and £12,000. In the US, you might find similar ranges, but fees often exceed $30,000 (£24,000) annually for private institutions.

However, it's important to note that many PhD programmes offer funding opportunities, including scholarships, grants, and teaching assistantships. These can significantly reduce your out-of-pocket expenses. In fact, some students even receive a stipend to cover living costs while they study

Beyond tuition, consider extra costs such as books, materials, and living expenses. In major cities, living costs can be substantial, averaging around £820 without rent (data from Numbeo) per month in the UK, depending on your lifestyle.

We’re going good news first. Studying a PhD gives you a lot. And, as with most things in life, you get out what you put in. Here’s a breakdown of the key benefits and opportunities of completing a PhD.

Improve employability

The impact earning a PhD has on your career prospects is significant. In a positive way, of course. You will be seen as an expert within your field – this is something most employers won’t be able to ignore.

Even if an employer isn’t an academic themselves, they’ll have an understanding of the work you’ve done to get your PhD and respect it. Most of us will instantly think of money when we hear the phrase ‘ROI’, and I guess it’s only when we look at employment that we see the monetary return on the academic investment of a PhD.

In short, a PhD often leads to a higher salary. The median salary one year after graduation with a PhD is £35,800 in the UK compared to £28,100 one year after a taught Masters.. Not only do you have higher earning potential, but you’re more likely to go straight into full-time employment after getting your PhD (70% of people go straight into a full-time job in the UK).

Gain unique skills (and learn about yourself)

A PhD means lots of independent study. If you’re not used to doing large amounts of work on your own – you better get used to it. Of course, every PhD is different but, as Holly Giles (PhD Researcher at the University of Reading) shares, there’s a lot to gain from this type of study:

“During the PhD, I have learnt so much scientifically (research skills, lab techniques, data processing) but also about the ways that I work best and independence. These transferable skills are probably the most unexpected benefit from the PhD but will stand me in good stead going forward.”

Exploration of ideas

A PhD should be seen as an opportunity to explore something you’re passionate about. You’ll be pursuing the study of a specific area within your discipline (or across them, in some cases) to achieve a certain goal.

However, regardless of what the desired outcome of your research is, at the centre of it all should be a desire to explore your chosen discipline. A PhD is the ideal opportunity to dive headfirst into what you’re passionate about.

“It has given me an opportunity to be paid to learn and to have autonomy over a research project that I can shape to follow my interests. I wouldn’t have had this opportunity anywhere else.” – Holly Giles, PhD Researcher, University of Reading

Boost your credibility

One thing is for certain. At the end of your PhD, you’ll get two little letters in front of your name. While it’s only two letters, the weight they carry is huge.

Becoming a Doctor of Philosophy in your chosen area represents so much. It shows commitment, passion, determination, but also research skills, advanced knowledge and an ability to work independently.

All of these things boost your credibility, making your research and writing more publishable, for example. This extra credibility is invaluable and part of what makes the ROI of a PhD so high.

Now, the not as positive news. There are some sacrifices you’re likely going to have to make if you pursue a PhD. It’s important that you understand the risks so you can weigh these up against the benefits of a PhD.

It takes time

It’s no secret that a PhD requires a lot of time and commitment. But exactly how much time? On average, it can take up to four years to complete a PhD. However, it largely depends on whether you’re able to study full-time or part-time.

If you end up studying a PhD part-time, it can take up to seven years to complete. This is clearly a huge amount of time to commit and it’s likely you’ll be studying alongside working too if your PhD is part-time. This takes us nicely to our next point.

It takes energy

Time and energy. Two things that are often taken from us at the same time, and that’s exactly the case with PhD study.

Let’s not beat around the bush – a PhD can be brutal. Your passion for your subject will be tested (as will your sanity) but, ultimately, it’s a marathon, not a sprint. A PhD is designed to be a bit of an endurance test, but it shouldn’t wear you into the ground. We’ve got plenty of wellbeing resources available if you need some extra advice and support (mostly straight from PhD students themselves!).

It costs money

A fully funded PhD is the holy grail. But not everyone will get that opportunity.

Funding a PhD yourself is hard, even if you do get some support. We’ve written a lot on this topic so, if you need a bit of a refresher, take a look at the basics of PhD funding. In short, you’re going to be paying approximately £4,500 per year for a PhD in the UK. However, you can’t talk about the cost without talking about the potential gains.

As we mentioned previously, the earning potential of a PhD is massive – but does this risk outweigh the potential rewards? That’s the £4,500 per year question.

So, is a PhD worth it? Well, that depends on how you define "worth it." If you're in it purely for the money, then it’s definitely one way of increasing your earning potential. If, however, you're driven by curiosity, intellectual challenge, and the undeniable prestige of being able to correct people when they call you "Mr." instead of "Dr.," then a PhD could be one of the best investments you ever make.

Yes, it’s expensive. Yes, it takes time. And yes, there may be moments when you question every life choice that led you here. But when you make it through, you’ll have something invaluable: expertise, credibility, and the ability to endure academic suffering with a smile (or at least a well-practised grimace).

Ultimately, the ROI of a PhD isn’t just about money—it’s about passion, perseverance, and the pursuit of discovering something new. If that sounds like a good deal, then welcome to the world of doctoral research.