UK 'just-under' pricing patterns at SDLT thresholds: 2025 Land Registry findings
When sellers price a home just under a Stamp Duty threshold, what do they actually pick? The textbook answer is "psychological" anchoring — prices like £249,950 or £499,950 designed to keep the buyer's brain inside the lower bracket. The Land Registry data tells a different story.
Across 835,340 UK residential sales in 2025, the dominant "just-under" anchor at every SDLT threshold is the next round £5,000 notch beneath it — £120,000 below the £125,000 nil-rate slab, £245,000 below £250,000, £495,000 below £500,000. The classic £xx9,950 psychological price exists but is dwarfed: 2,131 sales completed at exactly £495,000 in 2025 against just 189 at £499,950, an 11-to-1 ratio in favour of the round notch.
This piece looks at five SDLT thresholds in turn, then reads what the pattern means — and doesn't mean — for buyers and sellers.
The five SDLT slab boundaries we tested
Standard SDLT in England (HMRC, 2025-26 residential rates) steps up at £125,000 (2%), £250,000 (5%), £925,000 (10%) and £1.5M (12%). First-time buyer relief carves a separate path: zero up to £300,000, 5% on the slice £300,001 to £500,000, then full slab rates with no FTB benefit at all above £500,000 (HMRC).
That makes five thresholds where buyers and sellers face a real cash incentive to land at or below: £125,000, £250,000, £300,000, £425,000 (the FTB relief full-rate point until 1 April 2025) and £500,000 (the FTB relief cliff).
For each one, we counted UK 2025 sales at three anchors:
- the round £5,000 notch immediately below (e.g. £495,000)
- the £xx9,950 "psychological" anchor (e.g. £499,950)
- the £xx9,995 anchor (e.g. £499,995)
…and compared those against the at-threshold count and the £1 to £4,999 deadzone immediately above.
| Threshold | Round –£5k anchor | £xx9,950 | £xx9,995 | At threshold | +£1 to £4,999 deadzone |
|---|---|---|---|---|---|
| £125,000 | 5,319 (£120k) | 52 (£124,950) | 50 (£124,995) | 4,863 | 4,318 |
| £250,000 | 5,835 (£245k) | 341 (£249,950) | 188 (£249,995) | 10,603 | 3,224 |
| £300,000 | 5,186 (£295k) | 409 (£299,950) | 252 (£299,995) | 9,389 | 2,005 |
| £425,000 | 3,974 (£420k) | 28 (£424,950) | 39 (£424,995) | 5,626 | 1,406 |
| £500,000 | 2,131 (£495k) | 189 (£499,950) | 91 (£499,995) | 4,841 | 470 |
Source: HM Land Registry Price Paid Data, all residential transactions registered in 2025 (queried 2026-05-20).
Three patterns leap out.
First, the round £5,000 notch wins by an order of magnitude. At £500,000 the round notch beats the £xx9,950 psychological anchor 11-to-1. At £425,000 the ratio is 142-to-1. At £125,000 it is 102-to-1. The "just-under-£X-by-£50" pricing trope familiar from retail (£9.99, £4.95) has no detectable presence in UK property listings landing near an SDLT slab.
Second, the at-threshold count still dominates each window. That confirms the threshold-bunching cluster mapped piece by piece: negotiations gravitate to the slab itself, not to a notch below it. The £250,000 row shows 10,603 sales at exactly £250,000 against 5,835 at £245,000 — about 1.8-to-1 in favour of the slab edge.
Third, the £1 to £4,999 deadzone immediately above each threshold is consistently the lowest-volume bucket. That is the empirical fingerprint of a tax cliff: a £250,001 sale price costs the standard buyer an extra £2,500 SDLT compared with £250,000, with no compensating gain. Sellers and agents actively avoid pricing into the deadzone, and the share of sales that land there falls sharply.
The base rate: how round are UK property prices generally?
Before reading too much into specific anchors, set the base rate. Across all 835,340 UK 2025 transactions in the £50,000 to £2,000,000 range:
- 67.5% ended in a multiple of £5,000.
- 85.4% ended in a multiple of £1,000.
- Just 1.1% ended in a £xx,950 ending. Even fewer (0.85%) ended in £xx,995.
UK property pricing is, baseline, a £5,000-grid market. The "just-under-by-£50" pattern is not absent — it just sits inside a market that already rounds aggressively. When £495,000 outsells £499,950 in the £495 to £500k window, that is consistent with the broader 67.5% base rate for £5,000-multiples, not a separate phenomenon.
It also helps explain why the deadzone is so thin. In a market that defaults to £5,000 steps, the next round number above £250,000 is £255,000 — which sits outside the £1 to £4,999 deadzone we measured. Sellers don't need to "avoid" the deadzone deliberately; they simply price in £5,000 steps that happen to skip past it.
Pattern stability across the April 2025 rules change
The SDLT cap reduction at 1 April 2025 — the temporary 2022 nil-rate band returned to permanent levels, with the standard nil-rate down from £250,000 to £125,000 and the FTB nil-rate down from £425,000 to £300,000 — created a natural experiment. If round-anchor pricing were purely tax-driven, you would expect the £425,000 and £250,000 patterns to weaken sharply post-April. They didn't.
| Threshold | 2024 round –£5k | 2024 at-threshold | 2025 round –£5k | 2025 at-threshold |
|---|---|---|---|---|
| £125,000 | 5,817 | 5,187 | 5,319 | 4,863 |
| £250,000 | 5,915 | 11,059 | 5,835 | 10,603 |
| £300,000 | 5,361 | 9,579 | 5,186 | 9,389 |
| £500,000 | 1,993 | 4,726 | 2,131 | 4,841 |
Source: HM Land Registry Price Paid Data, registered 2024 and 2025 calendar years.
The 2024 and 2025 distributions are within a few percent of each other at every threshold, despite the underlying tax incentives changing materially in April 2025. The £425,000 result is the clearest case: it stopped being the FTB full-rate point on 1 April 2025, yet sales at £420,000 (2,479 post-April vs 1,495 pre-April, broadly stable in ratio terms against the at-threshold count) carry on at the same shape. Round-£5k anchoring is structural in the UK pricing grid; the SDLT slabs sit on top of it.
Round-number clustering away from any SDLT slab
If the round £5k anchor is structural, the same pattern should appear at thresholds that are not SDLT slab boundaries. The Land Registry data confirms it:
| Round anchor (no SDLT edge) | At threshold | +£1 to £4,999 deadzone |
|---|---|---|
| £350,000 | 8,229 | 1,842 |
| £400,000 | 6,729 | 1,152 |
Neither £350,000 nor £400,000 is a slab boundary. Both sit inside the standard 5% band (or above it, with no FTB benefit). And both show the same cluster-plus-deadzone shape we see at the real tax boundaries. The pattern is round-number anchoring, layered with a tax incentive at five of the round positions.
The cleanest reading is that UK transaction prices are mostly negotiated against a grid of £5,000 steps, and the SDLT slabs supply additional pull at the five positions where the grid happens to line up with a tax boundary. We mapped this individually for £125,000, £250,000, £400,000, £500,000, £750,000 and £1,000,000 in earlier pieces (see the £125k bunching analysis and the £500k stamp duty cliff edge). This piece is the meta-finding across all of them.
What this means for a buyer at the negotiation table
A buyer offering £499,995 is mathematically inside the FTB relief band, just like one offering £495,000. The SDLT bill on a £499,995 FTB purchase is £9,999.75 (5% on the slice £300,001 to £499,995); at £495,000 it is £9,750. About £250 different. Yet £495,000 outsold £499,995 in 2025 by 23-to-1.
That gap is unlikely to be tax-driven — £250 is small compared with the full £5,000 step. The likelier reading is that offers are made in £5,000 chunks because that is how UK property is talked about, marketed and listed. £495,000 is a Rightmove "guide price" that fits on a search filter; £499,950 is a holdover from a retail-pricing convention that the UK property market never really adopted.
That has two practical implications, neither of which is advice:
- A buyer trying to price "just under" a slab has more room than the psychological-pricing tradition suggests. £499,000 (114 sales in 2025), £498,000 (108) and £497,500 (117) all sit comfortably in the FTB relief band and would each cost the buyer slightly more SDLT than £495,000 but less than £499,995. The £5,000-step grid is convention, not regulation.
- A seller pricing "just over" a slab is unusually exposed. Only 470 sales completed in the £500,001 to £504,999 window in 2025 against 2,131 at the £495,000 anchor — a 4.5× cliff. A listing at £502,000 is competing against many fewer comparable completions than one at £495,000.
Speak to a qualified adviser before acting on any of this. The SDLT mechanics on FTB relief tapering between £300,000 and £500,000, the additional-property surcharge, and the cross-regime rules in Scotland and Wales each interact with the just-under question in ways an article cannot replicate at your specific price point. The HMRC SDLT residential rates page is the authoritative reference for the current bands.
Try a specific postcode
Run any UK postcode through the Homecost tool to see what its 2025 sale distribution actually looks like — including how it sits relative to the SDLT thresholds discussed above.
Look up the M1 1AE postcode to start with central Manchester, where 2025 sales cluster heavily around £200,000 to £300,000 and run head-on into both the £125,000 nil-rate slab and the £300,000 FTB relief cliff.
For the full set of background pieces, see Stamp Duty first-time buyer relief explained, the True cost of buying a £500,000 home, and the rest of the market-analysis index.
Based on 835,340 HM Land Registry transactions registered in 2025 (queried 2026-05-20), with 2024 comparison rows drawn from registered 2024 transactions. SDLT slab definitions per HMRC residential rates page as at May 2026.
This is general information, not advice. SDLT rules interact with first-time buyer relief, additional-property surcharges, joint-buyer aggregation and residency tests in ways that depend on a buyer's exact circumstances. Speak to a qualified conveyancer or tax adviser before acting.