dyslexiaA dyslexia assessment costs £450. Here is when it pays back.
UK adult dyslexia assessments run from £350 to £882. The average is around £650. NHS provision does not exist for adults. But for a working dyslexic adult, the assessment report can unlock Access to Work funding, trigger the employer's Equality Act duty, and give you the specific evidence HR cannot argue with.
UK diagnostic assessments cost £350–£882. The BDA charges £690 (specialist teacher) or £882 (psychologist). There is no NHS route for adults. For employed adults, a diagnosis unlocks Access to Work and formal Equality Act protection. The assessment pays back within months if it results in funding. If cost is a barrier, the BDA offers bursaries.
UK dyslexia assessment costs in 2026
There is no single price. The cost depends on who conducts the assessment and where. The two main types are assessments by specialist teachers with an AMBDA qualification (cheaper, valid for most adult purposes) and assessments by chartered psychologists (more expensive, required for certain contexts).
| Assessor type | Typical cost (2026) | Valid for workplace use? |
|---|---|---|
| Specialist teacher (AMBDA/APC-qualified) | £350–£700 | Yes — for Access to Work and employer adjustments |
| BDA assessment (specialist teacher) | £690 (incl. VAT) | Yes |
| Chartered psychologist / educational psychologist | £600–£882 | Yes — and required for some professional body contexts |
| BDA assessment (psychologist) | £882 (incl. VAT) | Yes |
| NI Dyslexia Centre (Northern Ireland) | £650 | Yes |
Sources: BDA assessments service (June 2026); NI Dyslexia Centre (June 2026). Independent assessor prices vary by region and experience — London assessors tend to charge at the upper end of their category range.
UK adult dyslexia assessment price range, June 2026. Most independent assessors charge £500–£700. Source: BDA, provider websites.
For most adults, an AMBDA-qualified specialist teacher assessment at £500–£650 is the right choice for workplace purposes. A psychologist assessment is necessary only if your profession requires it (some legal, medical, or academic contexts specify it) or if you are seeking DSA as a student.
What the assessment includes
A full adult dyslexia assessment takes 2–4 hours. It is not a questionnaire or a screening tool — it is a battery of standardised tests administered by a qualified assessor, followed by a written report. The tests cover:
- Reading speed and accuracy (single word and passage reading)
- Phonological processing — the core cognitive difference in dyslexia
- Working memory and processing speed
- Spelling and written expression
- Background history (school experience, previous assessments)
The written report confirms or rules out dyslexia and explains which specific areas are affected. For workplace use, a good assessor will include a section on recommended adjustments — the specific things an employer can do to reduce the impact of your dyslexia on your work. That section is what you hand to HR.
Reports from AMBDA-qualified assessors and chartered psychologists are accepted by DWP for Access to Work applications, and by employers under the Equality Act 2010.
When the assessment pays back
The £450–£882 cost looks different depending on what happens next.
Scenario 1: You apply for Access to Work. A supported Access to Work application — one backed by a diagnostic report — typically results in a larger grant than an unsupported one. If the grant funds £2,000 of dyslexia coaching and assistive software, the assessment paid back roughly 3:1 in the first year. The Access to Work calculator estimates what support you could be entitled to.
Scenario 2: Your employer makes adjustments. Without a formal report, many employers treat adjustment requests as optional. With a report confirming dyslexia and specifying what is needed, the Equality Act 2010 duty to make reasonable adjustments is triggered. If extended proofreading time or software access previously cost you hours of unpaid evening catch-up work each week, the value of having those adjustments formally in place is substantial. The masking cost calculator can put a number on it.
Scenario 3: You decide the assessment doesn't change anything. Some people get assessed, confirm what they already suspected, and find that their employer makes adjustments willingly anyway. In that case the assessment is an expensive piece of paper. The question to ask before booking is: what will I do with this report that I cannot currently do without it?
If you are in employment and plan to apply for Access to Work or request formal adjustments from your employer, the assessment almost certainly pays back within a year. If you just want to know, and you already have an understanding employer, it is a personal decision rather than a financial one.
Is there a free route?
There is no NHS route to a free adult dyslexia assessment. GPs can refer adults for cognitive assessments in cases where there is a clinical concern about a co-occurring condition, but dyslexia alone is not a referral basis.
Three options exist for reducing cost:
BDA bursaries. The British Dyslexia Association offers means-tested bursaries to cover part or all of their assessment fee for people who cannot afford it. Contact them directly at bdadyslexia.org.uk to check availability — the fund is limited.
Access to Work workplace needs assessment. If you are employed, DWP will fund a workplace needs assessment as part of an Access to Work application. This is not the same as a diagnostic assessment — it does not produce a formal diagnosis — but it identifies what workplace support you need and can carry similar weight for employer adjustment requests. Apply at gov.uk/access-to-work. See the full Access to Work guide for the application process.
Employer-funded assessment. Some employers will fund a diagnostic assessment as part of their reasonable adjustment process, particularly larger organisations with occupational health departments. It is worth asking HR — framed as "I would like a workplace needs assessment to identify adjustments" — before booking privately.
How to find an accredited assessor
The two main directories for the UK are:
- Patoss assessor directory at patoss-dyslexia.org — the professional body for specialist teachers. Filter by region and adult assessment.
- British Dyslexia Association at bdadyslexia.org.uk/services/assessments — their own assessment service and a register of accredited assessors.
When comparing assessors, check that they hold AMBDA (Associate Member of the British Dyslexia Association) or APC (Assessment Practising Certificate) status. Both confirm they are qualified to produce diagnostic reports recognised for workplace and Access to Work purposes.
Avoid online screening tools — these are not diagnostic assessments and produce no evidence usable for Access to Work or employer adjustment requests.
US dyslexia assessment costs
US only: In the United States, adult dyslexia assessments are conducted by licensed psychologists and typically cost $1,500–$3,500 depending on state, assessor, and whether the assessment includes a full psychoeducational battery. Private insurance rarely covers adult dyslexia assessments. Some university disability services offer reduced-cost assessments for students.
For US employees, the relevant legal framework is the ADA (Americans with Disabilities Act) rather than the Equality Act. A formal diagnosis is not legally required to request reasonable accommodations — but having one simplifies the process significantly. See the full ADA accommodations guide for how this works in practice.
US signpost: For ADA accommodations, contact your employer's HR department or file with the EEOC. The Job Accommodation Network at askjan.org is a free resource for accommodation planning.