Why your NHS contract deserves a proper read
Your NHS dental contract is the single most important financial document in your practice. It sets the activity you must deliver, the money you are paid for it, and the terms under which a commissioner can recover funding if you fall short. Many principals sign once and never look again, only to discover too late that a term they skipped has cost them real money. The same gap catches buyers: the contract is the asset, yet it is often the least understood part of a purchase.
This guide is a plain-English walkthrough of what each key term means and what to check, written for a practice principal or a buyer carrying out due diligence. It is an overview that points you to the right deeper guide for each topic, so you can read your own contract with confidence rather than guessing. If you are an associate rather than the contract holder, your focus belongs on your associate agreement and your self-assessment position instead.
The shape of the contract: type and term
Start with what kind of contract you hold. In England the standard agreement is a General Dental Services (GDS) contract, which is open-ended and runs until terminated. A Personal Dental Services (PDS) agreement is time-limited, historically used for local or specialist arrangements, and is now far less common. Out-of-hours or operational (ODS) arrangements sit outside the routine activity model. The type matters because it tells you whether you hold an indefinite contract or one with an end date and a renewal question hanging over it.
If your practice is in Scotland, the activity model described here does not apply at all. Scotland pays under the item-of-service Statement of Dental Remuneration (SDR) rather than Units of Dental Activity, so a Scottish contract is read on a completely different basis. The walkthrough below is written for the UDA model used in England (Wales and Northern Ireland use their own variants of it). Our guide on GDS vs PDS vs ODS contracts sets out the differences in full if you are weighing which type you are on.
The financial schedule: target and per-UDA value
The financial heart of a GDS or PDS contract is the activity schedule. It states the annual UDA target you are contracted to deliver and the annual contract value. The per-UDA value is simply the contract value divided by the target, and it is the number that drives everything else.
There is no national UDA value. Each contract's rate was set from a 2006 baseline (the historic test-year fees divided by the contracted units) and uplifted since, so two practices on the same street can hold very different rates. England values commonly sit somewhere in the region of the mid-twenties to mid-thirties of pounds per UDA, but the spread is wide and the only figure that matters is the one in your own schedule. Treatment is banded into the schedule too: a Band 1 course counts as 1 UDA, Band 2 as 3 UDAs, Band 3 as 12 UDAs, and an urgent course as 1.2 UDAs.
When you read the schedule, check three things. First, that the per-UDA value matches your most recent commissioner correspondence, because the wrong rate is sometimes carried over after a transfer or a change of contract holder. Second, that the target is realistic against your actual delivery over the past two years, since a persistent shortfall is a financial risk, not just an administrative one. Third, that there is no in-year variation clause letting the commissioner adjust the value or target mid-year without a fresh negotiation. For a full breakdown of how the rate is built and what a strong or weak value looks like, see our guide to UDA value explained for UK dentists.
Patient charges: collected and remitted, not retained
This is the term most often misread. Under the GDS contract you collect NHS patient charges (the banded fees) from patients who are not exempt, but those charges are not extra income on top of your contract value. They count towards the contract value: you collect them, remit them, and they are set against what you are paid for the activity. In other words, the contract value already assumes a certain level of patient-charge income, and the charges you collect reduce the net amount paid out rather than adding to it.
The practical points to read for are how the contract describes the collection and remittance obligation, what returns you must submit, and what happens if charges are mis-recorded. Treat patient charges as a remittance duty to administer accurately, not as a retained margin to plan around. If a seller or broker presents patient-charge income as a separate revenue line on top of the contract value, that is a red flag worth questioning.
Year-end reconciliation and clawback
A GDS or PDS contract is target-based with smooth monthly payments through the year, then reconciled against actual delivery at year-end (with a mid-year review along the way). The reconciliation is where under-delivery bites, and the English rules are specific:
- Deliver 96 to 100 percent of target (a shortfall of 4 percent or less) and the missed activity is carried forward into the next year's requirements rather than clawed back as cash. This is the 4 percent carry-forward rule. It is not free, because next year then carries a heavier delivery load on the same money, but it does not hit this year's cash.
- Deliver below 96 percent and the commissioner recovers the overpayment for the activity not delivered, up to the full annual contract value. The 96 percent line is the genuine clawback threshold.
- Over-deliver and the commissioner may allow a tolerance of up to 102 percent of the target (higher in limited, pre-agreed circumstances). Payment for over-delivery is discretionary, so never bank it in a forecast.
The financial point for a principal is to separate the two outcomes cleanly: a carry-forward is a workload problem for next year, while a clawback is a cash problem now. Track delivery monthly against a straight-line run rate so you can see a shortfall building with months to react, not after the year has closed. The full mechanics, including how to respond to a recovery notice, are covered in our guide on NHS dental contract clawback.
Variation clauses and commissioner discretion
NHS contracts are not static. Commissioners can propose variations, and you have the right to accept or reject them, but many variation letters arrive looking like routine admin and get signed without a careful read. Common variations change the target or per-UDA value, the services you must provide, or the contract term. Some can also be used to revisit the contract value, which is why a variation letter deserves the same scrutiny as the original contract.
Before signing any variation, ask a single question: does this improve or worsen my financial position? If you cannot answer it from the letter, do not sign until you can. Commissioners also hold discretionary powers, for example to agree a temporary target reduction where you can evidence a genuine reason such as a clinician leaving or a refurbishment. They are not obliged to agree, so a well-evidenced, written request always beats an informal ask.
Termination, change of control and the sale question
Read the termination provisions even if a sale is years away. The commissioner can end the contract for reasons including persistent under-delivery, breach of the terms of service, or a change in the contract holder's circumstances, and notice periods vary, with serious breach allowing a shorter route. Knowing the grounds and the notice period tells you how exposed the contract is.
The sale provisions are where principals lose deals. How the contract moves depends entirely on the sale structure:
- Asset sale. The contract is novated to the buyer, and that requires the commissioner's consent. Consent is not automatic, it takes time, and some commissioners treat the sale as a trigger to renegotiate the per-UDA value downward. If consent is refused, the sale can fall through.
- Share sale. The contract stays inside the company, so there is no novation and no consent gateway on the contract itself. This is one of the structural reasons a share sale can be cleaner, though it carries the company's history with it.
For a buyer, this means the change-of-control and novation terms are due-diligence items, not afterthoughts. Read them early, because they shape both the deal structure and the timetable. The step-by-step process, including what commissioners look for before granting consent, is set out in our guide on transferring an NHS dental contract on a practice sale.
The key contract terms at a glance
Use this table as a quick map of what to find in the contract and what to look for when you read each term.
| Contract term | What it means | What to check (and the red flag) |
|---|---|---|
| Contract type | GDS (open-ended), PDS (time-limited) or ODS (out-of-hours) | Confirm which you hold. Red flag: a PDS agreement near its end date with no renewal certainty. |
| UDA target | The annual units of dental activity you must deliver | Compare against your actual delivery. Red flag: a target you have not hit in two years. |
| Per-UDA value | Contract value divided by target; set from a 2006 baseline, no national rate | Match it to commissioner correspondence. Red flag: a low value relative to local norms, or a rate that changed after a transfer. |
| Monthly payment schedule | Smooth monthly payments across the year, reconciled at year-end | Confirm the figures reconcile to the annual value. Red flag: payments that do not tie to the schedule. |
| Year-end reconciliation and clawback | 96 to 100 percent delivered carries forward; below 96 percent is recovered | Locate the reconciliation terms. Red flag: an aggressive target that makes the 96 percent line hard to reach. |
| Patient charges | Collected and remitted; count towards the contract value, not on top | Read the collection and return duties. Red flag: charges presented as extra income. |
| Variation clause | How the commissioner can propose changes to terms | Check what can change in-year. Red flag: a clause allowing mid-year value or target changes. |
| Termination and notice | Grounds and notice period for ending the contract | Note the grounds and timescales. Red flag: short notice or broad termination triggers. |
| Change of control / novation | Asset sale needs commissioner consent to novate; share sale keeps it in the company | Read before any sale. Red flag: consent terms that let the commissioner renegotiate value. |
The red flags to read for
Pulling the threads together, a handful of warning signs deserve attention on any contract read:
- A low per-UDA value. A weak rate compounds every year and depresses both income and the price a buyer will pay. Always read your own number rather than assuming a regional average.
- An aggressive target. A target you cannot reliably hit pushes you toward the 96 percent clawback line and turns a normal year into a recovery risk.
- Patient charges treated as upside. If anyone is counting patient charges on top of the contract value, the financial picture is overstated.
- Loose variation rights. A clause letting the commissioner adjust value or target mid-year removes the certainty a contract is supposed to give.
- Hard novation terms. Change-of-control language that invites a value renegotiation on sale can erode the practice price exactly when you are exiting.
Reading the contract as a buyer
If you are buying, the contract is the asset, so treat it as the centre of due diligence rather than a formality. Read the per-UDA value and target together to understand the real earning capacity, not just the headline contract value. Check delivery history against the target to gauge clawback exposure under the previous owner, and confirm whether you are buying assets (needing novation and commissioner consent) or shares (keeping the contract in the company). The contract analysis sits alongside the wider numbers covered in our financial due diligence guide, and the way the contract feeds practice value is set out in our goodwill valuation and sale playbook.
When to bring in an adviser
You can read most of a contract yourself with this map in hand. Bring in a dental-specialist adviser when the stakes rise: a clawback dispute, a variation you cannot interpret, or a purchase or sale where the novation terms shape the deal. At Dental Finance Partners we support principals with practice accounting and contract review, and our free practice health check includes a high-level look at your contract terms.
Final thoughts
An NHS dental contract is not a set-and-forget document. It is a living agreement that sets your income, your clawback risk and, when the time comes, the saleability of your practice. Read it once a year against your actual delivery, scrutinise every variation before you sign, and read the novation terms long before you sell. Knowing what each term means, and what good and bad look like, is the difference between running the contract and the contract running you.