Doctoral Degree: What It Is, What It Costs, and How Long It Takes

What a doctoral degree actually is

"Doctoral degree" is really two different credentials wearing the same label — a research PhD built around original scholarship, and a professional doctorate (MD, JD, PharmD, DDS, DNP) that is simply the standard practicing credential for a licensed field. Confusing the two leads to very different, and sometimes very wrong, expectations about time, cost, and purpose.

"Doctoral degree" covers two meaningfully different categories. A research doctorate (PhD, EdD) trains a graduate to conduct original research and typically culminates in a dissertation; it is the standard credential for university faculty and many senior research roles. A professional doctorate (MD, DO, JD, PharmD, DDS/DMD, DNP) is the entry-level practicing credential for a licensed profession — the primary example, not an optional add-on, in fields like medicine, law, dentistry, and pharmacy.

The rest of this page covers the practical specifics — typical time and cost, how the curriculum is usually built, who this level tends to fit well, and where it sits relative to the other four credential levels covered on this site. As with every page here, treat the figures below as a well-sourced starting reference, and confirm exact numbers for any specific program directly with that program before enrolling, since real programs vary around these national norms in both directions.

Typical time, credits, and cost

These are national reference ranges, not a quote for any specific school — actual credit requirements, program length, and cost vary by institution, state residency status, and field. Before enrolling, use the specific college's net price calculator (federally required and linked from its financial aid page) to get a personalized cost estimate, and confirm the exact credit count and expected completion time with the program's advisor, since programs within the same credential level can differ by a full semester or more depending on prerequisite requirements and course availability. Part-time enrollment, common among working adults and parents, extends every figure in the table above roughly in proportion to the reduced course load, and many programs cap how few credits a student can take per term while still qualifying as "enrolled" for financial aid purposes — another detail worth confirming directly if part-time study is part of your plan.

How the curriculum is usually structured

Research doctoral (PhD) programs generally front-load coursework in the first one to three years, followed by comprehensive or qualifying exams, then several years dedicated to original dissertation research conducted under a faculty advisor — the dissertation, not coursework, is what actually determines total time to completion for most PhD students. Professional doctorate programs (MD, JD, PharmD, DDS/DMD, DNP) instead follow a structured, cohort-based curriculum similar in format to a bachelor's or master's program, but longer and denser, typically combining classroom coursework with extensive supervised clinical rotations, externships, or practicum experience in the later years, followed in some fields (medicine, in particular) by a multi-year residency required before independent practice.

Who this credential is for

Students pursuing university faculty or senior research careers (PhD/EdD track); and students entering professions where the doctorate is the standard practicing credential, such as medicine, law, dentistry, and pharmacy (professional doctorate track) — see the specific program pages for fields like medicine, law, dentistry, and pharmacy for how their doctoral pathway works in practice.

Just as importantly, this level is often not the right choice when a shorter or longer credential would serve the same underlying goal more efficiently. Before committing, it's worth asking directly: does my target field actually require this specific level, or a different one, for the role I want? Is there a faster path (a certificate or associate degree) that gets me working sooner in a field where experience counts as much as credential level? Or does my target field's licensure requirement mean a shorter credential simply won't qualify me at all, no matter how strong my resume otherwise looks? The program pages on this site note the typical minimum credential and licensure pathway for each of the 50 fields covered here as a starting reference for this question.

Where this fits on the full degree ladder

Each level generally builds on, rather than replaces, the one before it, and most fields have a recognized minimum level required to practice, with additional levels adding depth, specialization, licensure eligibility, or research capability rather than repeating the same content at greater length. Moving up a level is rarely a matter of simply taking more of the same coursework — it usually means a meaningful jump in specialization, independence expected of the student, and, for licensure-track fields, additional legal scope of practice.

Accreditation considerations

Institutional accreditation matters equally at every credential level — federal financial aid, credit transfer, and general credibility all depend on it regardless of whether you're pursuing a certificate or a doctorate. Programmatic accreditation becomes more consequential the further a field is tied to licensure: a certificate in a non-licensed field (project management, for example) may not have or need a specialized programmatic accreditor, while a doctoral program in medicine, law, dentistry, or pharmacy without the field-specific accreditor (LCME/COCA, ABA, CODA, ACPE respectively) is not a credential that leads to licensure at all, regardless of its academic content. See our accreditation guide for the accreditor that applies to your specific field before enrolling at any credential level. As a practical check, search the Department of Education's accredited-institution database and, where relevant, the field-specific accreditor's own program directory for the exact institution and program name — not just the institution's general reputation — before paying a deposit or signing an enrollment agreement.

Financial aid at this level

PhD funding and professional doctorate funding look very different. PhD students in many fields (particularly sciences, social sciences, and some humanities) are commonly funded through multi-year assistantship packages covering tuition plus a living stipend, sometimes framed as a condition of admission rather than a separate application. Professional doctorate students (MD, JD, PharmD, DDS, DNP) typically do not have equivalent guaranteed funding and rely more heavily on federal Direct Unsubsidized and Grad PLUS Loans, institutional scholarships, and personal resources — total borrowing in these fields can be substantial, which is worth weighing explicitly against expected post-licensure income (see our careers page for how to do that comparison).

Common mistakes at this level

• Confusing a PhD program (research-focused, often funded) with a professional doctorate (practice-focused, typically self-funded) when researching a field.
• Underestimating total time to completion for a PhD, where the dissertation phase — not coursework — is the primary driver of how long the degree actually takes.
• Not confirming programmatic accreditation (LCME/COCA for medicine, ABA for law, CODA for dentistry, ACPE for pharmacy) before enrolling in a professional doctorate, since a degree from an unaccredited program in these fields will not lead to licensure.

How this looks across different fields

The same credential level plays a different role from field to field. In fields like nursing, an associate degree (ADN) is a genuine, licensable entry point into practice as a registered nurse, while in a field like software engineering, an associate degree is far less commonly the terminal credential employers expect. In fields like medicine, law, dentistry, and pharmacy, the doctoral level is not an optional advanced credential — it is the entry-level practicing credential, with no bachelor's-only path to licensure. In fields like accounting, a bachelor's degree covers the core content, but many states require 150 total credit hours (beyond the standard 120) for CPA licensure, which some students satisfy with a bachelor's-plus-extra-coursework path and others satisfy with a full master's degree. Check each of the 50 program pages on this site for the field-specific licensure and accreditation notes relevant to the doctoral degree level in that field, since assuming a general rule about credential levels applies uniformly across every field is one of the most common planning mistakes prospective students make.

A realistic example

Consider two different students both described as "pursuing a doctorate." One is a biology bachelor's graduate admitted into a fully funded PhD program, receiving a tuition waiver and a stipend in exchange for research and teaching work over an expected five to six years, aiming for a research career. The other is a bachelor's graduate admitted into a four-year, self-funded Doctor of Pharmacy (PharmD) program, taking out loans to cover tuition, with a clear, structured curriculum leading to NAPLEX licensure and practice as a pharmacist. Both are "doctoral students," but their funding, timeline, and end goal are almost entirely different — a distinction worth understanding clearly before assuming general doctoral advice applies equally to both situations.

What comes after a doctoral degree

A doctoral degree is generally the terminal credential in a field — the highest level of formal education recognized, whether that means a PhD graduate moving into a faculty research career or a professional doctorate graduate (MD, JD, PharmD, DDS, DNP) entering licensed practice, often followed by field-specific post-degree requirements like a medical residency or a bar exam rather than further formal schooling. Continuing education after a doctorate typically takes the form of licensure renewal requirements, board certifications in a subspecialty, or postdoctoral research positions (common in PhD fields) rather than another degree level.

Frequently asked questions

For how this credential level fits your specific field of interest, see the relevant program page, which notes typical entry-level requirements, accreditation, and career data for that field specifically.