What a UDA value actually is
A UDA value is the amount your NHS contract pays for each Unit of Dental Activity (UDA) you deliver. The UDA is the currency of NHS dentistry in England, Wales and Northern Ireland: every course of NHS treatment is converted into a fixed number of UDAs, and the contract pays a set price for each one. Scotland is the exception. It does not use UDAs at all, paying instead on an item-of-service basis under the Statement of Dental Remuneration (SDR).
The single most important fact about the UDA value is the one most often stated wrongly: there is no national UDA value. There is no published rate that applies to every practice, and any source that quotes "the UK UDA rate" as a single number is simplifying something that is genuinely contract-specific. Two practices a mile apart can hold materially different per-UDA values on otherwise similar contracts. The only figure that governs your income is the per-UDA value written into your own contract.
For practice owners, associates and locums alike, that figure is the starting point for almost every financial decision you make around NHS work: whether a contract is worth holding, what an associate split is really worth, and how the NHS side of a mixed practice contributes to profit.
Why there is no national rate: the 2006 baseline
The current contract framework dates to the 2006 NHS dental reforms, which introduced UDAs and replaced the old fee-per-item system. Crucially, each practice's per-UDA value was not negotiated and was not set to a national tariff. It was calculated from that practice's own historic position. Broadly, the contract value was based on the practice's gross NHS fees in a reference test year, and the UDA target was derived from its historic activity. Dividing one by the other produced a starting per-UDA value unique to that practice, which has been uplifted (not reset) each year since.
That history is why the values are so uneven. A practice that happened to bill more per course of treatment in the test year locked in a higher value and has carried it forward ever since. The figure reflects a snapshot from nearly two decades ago, not current effort, current costs, or current need in the area. It is also why "increasing your UDA value" is so difficult: there is no live negotiation to win, only the annual central uplift applied to the figure you inherited.
In practical terms, England values run roughly from £15 at the low end to over £45 at the high end, with the large majority clustering between £25 and £35. Treat those as a market context range only. Use the actual value in your contract for any calculation that matters, because where your figure sits inside that spread changes the entire economics of your NHS commitment.
How treatment bands convert into UDAs
You earn UDAs by completing courses of treatment, and each course is assigned a fixed number of units according to its clinical band, not the time it takes or the number of items within it. The conversion is national and fixed, so the only variable in your income is your own per-UDA value.
| Course of treatment | UDAs earned | Typical examples |
|---|---|---|
| Band 1 | 1 UDA | Examination, diagnosis, X-rays, scale and polish, preventive advice |
| Band 2 | 3 UDAs | Fillings, extractions, root canal treatment |
| Band 3 | 12 UDAs | Crowns, dentures, bridges |
| Urgent | 1.2 UDAs | Emergency course of treatment, pain relief |
The jump from 3 UDAs for a Band 2 to 12 UDAs for a Band 3 is the reason your band mix drives delivery so heavily. A single Band 3 course is worth the same number of units as four Band 2 courses, even though the chair time and lab cost behind it are very different. Two practices on identical per-UDA values can post very different effective hourly economics purely because of the type of work each one does. For a deeper look at how the bands behave and where the financial traps sit, see how the NHS treatment bands affect your UDA income.
How to find your own UDA value
If you are a practice owner, the two numbers you need are both in your contract documentation and on your NHS schedule: the total annual contract value and the contracted annual UDA target. Divide the first by the second and you have your per-UDA value. For example:
- Annual contract value: £200,000
- Contracted annual UDAs: 8,000
- Per-UDA value: £200,000 ÷ 8,000 = £25.00
That is the headline figure, though your contract may also carry seniority payments, parental-leave cover or other allowances that nudge the effective rate. The core arithmetic, contract value divided by UDA target, is the right starting point every time. You can run the same calculation, and test how a different value or target changes your position, with our UDA value calculator.
If you are an associate, the per-UDA value you are paid a share of is the value of the contract you deliver against, and your principal can tell you what it is. A well-drafted associate agreement states the per-UDA value (or the exact money-per-UDA) explicitly. If yours does not, it is entirely reasonable to ask, because that single figure underpins your income. Never accept a national average as a substitute for the contract's real value.
Why the value matters for practice finances
Your per-UDA value is only half the picture. Profitability is the value minus the cost of delivering each unit. Staff salaries, premises, materials, lab fees and equipment all sit on the cost side, and on lower-value contracts the margin can be thin. The discipline is to know your cost per UDA and compare it directly with your value: if a contract pays £28 a unit and costs you £20 a unit to deliver, the £8 gap is what funds everything else, and a few pounds of cost movement either way changes the answer materially.
A point that catches many owners out is how patient charges interact with the contract. The NHS patient charge a patient pays for their band of treatment does not sit on top of your contract value. It counts towards it. The commissioner's payment is reduced by the patient charges you collect, so collecting charges does not add income. It changes who funds the same contract value. Building a model that adds patient charges on top of the UDA payments will overstate NHS income, sometimes badly.
One piece of good news on the tax side: NHS dental care is exempt from VAT under the health and welfare provisions (VATA 1994 Schedule 9 Group 7), so your UDA income is not reduced by VAT. That exemption is also why a practice can fall outside VAT registration on its NHS work even at significant turnover. The watch-item is the purely cosmetic, non-therapeutic private work (such as some facial aesthetics and whitening) that can be standard-rated and is assessed separately. NHS UDA income itself is clean of VAT.
What the value means for associates and locums
For associates, the per-UDA value sets the ceiling for your pay. Most agreements pay a percentage of the contract's value, commonly between 40% and 55%, with the exact split reflecting whether the practice carries lab fees, materials and nurse support. At a £30 value and a 50% split you receive £15 per UDA before tax and expenses; deliver 2,000 UDAs in a year and that is £30,000 gross from NHS work. Two factors decide whether that is a good deal: the value behind the percentage, and the UDA target you are committing to. A high target against a modest value can mean a lower effective rate than the headline split suggests, so weigh both together. You can model your position after tax and costs with our associate take-home calculator.
For locums, the same logic flows through to daily and per-UDA rates. A practice on a higher-value contract has more room to pay, while a low-value contract constrains what any locum arrangement can sustain. Again, the contract's real value, not a national average, is what determines the room.
The value, clawback and your delivery target
The per-UDA value works alongside a delivery target, and the two together create the financial pressure points in an NHS contract. You are paid in smooth monthly instalments across the year against your target, and at year-end your actual delivery is reconciled against it. Fall short by too much and the commissioner recovers the payment for activity you did not deliver. That recovery is what dentists mean by clawback, and the per-UDA value is the price tag on every undelivered unit. The mechanics of the carry-forward tolerance and the clawback threshold are set out in our guide to how NHS dental contract clawback works.
The practical takeaway is to track UDA delivery against target every month rather than discovering a shortfall at year-end. A higher per-UDA value raises both the reward for hitting target and the cost of missing it, which is one more reason to know your figure precisely.
Value, contract type and region
Your per-UDA value also interacts with the type of NHS contract you hold. The standard, open-ended contract is the General Dental Services (GDS) contract, with Personal Dental Services (PDS) and other arrangements covering more specialised or time-limited work. The contract type affects how the value sits within the wider agreement and what happens on a sale or transfer. For how the contract families differ, see our comparison of GDS, PDS and ODS NHS dental contracts.
Because every value traces back to a practice-specific 2006 baseline, the spread across the country is wide and is not a published regional tariff. The pattern of variation, and what it means when you are valuing or buying a practice, is covered in our piece on how UDA rates vary by region across the UK. The headline rule holds throughout: do not plan on a regional average, plan on the contract in front of you.
Practical steps for dentists
- Find your real per-UDA value. Divide your contract value by your UDA target, or ask your principal for the figure if you are an associate. Write it down and use it in every NHS calculation.
- Work out your cost per UDA. Total your delivery costs and divide by the UDAs you deliver. The gap between value and cost is your true NHS margin.
- Model patient charges correctly. Remember charges count towards, not on top of, your contract value, so do not double-count them as extra income.
- Track delivery monthly. Compare cumulative UDAs against target through the year to stay clear of the clawback threshold.
- Review your band mix and your splits. Understand how Band 1, 2, 3 and urgent courses convert, and check any associate split against the contract's actual value.
The per-UDA value is the foundation of NHS dental finances, and almost every common mistake comes from treating it as a national figure rather than a contract-specific one. For tailored advice on your own contract, splits or practice numbers, speak to a dentist-only specialist. We at Dental Finance Partners work exclusively with UK dentists and can review your position in a free initial conversation.