Mercedes EQS 450+ salary sacrifice vs PCP: scheme caps, 4% BIK math, five-year total cost for a higher-rate UK taxpayer, where the EQE is the rational alternative.
Mercedes EQS UK pricing and P11D 2026
The EQS lineup splits along a clear sal-sac line: the 450+ saloon at a £106,450 P11D sits inside most premium scheme caps, while the 580 4MATIC and AMG EQS 53 push past £128,000 OTR and only fit the very top of the £900-a-month gross cap. WLTP range is the second axis — the 480-mile 450+ is the longest-legged car on a UK BIK statement at this price point. Pricing from the Mercedes-Benz UK configurator below is the figure your scheme provider will plug into the BIK calculator.
EQS saloon OTR pricing from Mercedes-Benz UK and Carwow inventory data, late May 2026:
| EQS saloon variant | UK OTR start | Battery / Range | P11D (approx.) |
|---|---|---|---|
| EQS 450+ saloon | £107,000 | 120 kWh / up to 480 mi WLTP | £106,450 |
| EQS 450 4MATIC saloon | £114,500 | 120 kWh / up to 449 mi WLTP | £113,950 |
| EQS 580 4MATIC saloon | £128,500 | 120 kWh / up to 430 mi WLTP | £127,950 |
| AMG EQS 53 4MATIC+ | £165,500 | 120 kWh / up to 354 mi WLTP | £164,950 |
The scheme cap reality on the EQS
Every EQS variant sits above the £75,000 P11D cap that Octopus EV and Loveelectric publish on their standard schemes. That leaves three realistic UK sal-sac routes for the EQS:
- Tusker premium tier: caps reach £110,000 to £130,000 P11D on premium employer schemes. The EQS 450+ at £106,450 P11D fits within most premium-tier Tusker arrangements. The 580 4MATIC at £127,950 fits some.
- Corporate-bespoke schemes (employer-specific): larger UK employers (typically £500m+ revenue) often have bespoke sal-sac arrangements with no published cap. The EQS, EQS SUV and AMG EQS 53 can all be accommodated, subject to the employer’s HR-published policy.
- ElectriX (LV= / Allianz): mid-tier caps of approximately £100,000 P11D fit only the EQS 450+ standard rear-drive specification, and only on some employer accounts.
For most UK sal-sac buyers the practical EQS story is: 450+ through Tusker premium tier, or 580 4MATIC through a corporate-bespoke scheme. The AMG EQS 53 4MATIC+ at £164,950 P11D requires an executive-tier corporate-bespoke arrangement that very few employers offer. If your scheme caps under £100,000 P11D, the smaller Mercedes EQE saloon (see our Polestar 4 vs EQE sal-sac comparison) is the rational pick.
EQS 450+ BIK math 2026-27 to 2029-30
Per HMRC’s appropriate-percentage tables, BIK on EVs rises from 4% (2026-27) to 5% (2027-28), 7% (2028-29) and caps at 9% (2029-30). On the EQS 450+ at £106,450 P11D, the annual BIK figures for a higher-rate (40%) taxpayer:
| Tax year | EV BIK % | Taxable benefit (£106,450 P11D) | 40% higher-rate annual BIK tax | Monthly |
|---|---|---|---|---|
| 2026-27 | 4% | £4,258 | £1,703 | £142 |
| 2027-28 | 5% | £5,322 | £2,129 | £177 |
| 2028-29 | 7% | £7,452 | £2,981 | £248 |
| 2029-30 | 9% | £9,580 | £3,832 | £319 |
Sal-sac vs 5-year PCP on the same EQS 450+
Indicative comparison for a higher-rate UK taxpayer, 5-year contract, 10,000 miles/year, EQS 450+ specification at £107,000 OTR (£106,450 P11D):
| Item | Sal-sac through Tusker premium tier | 5-year PCP via Mercedes-Benz Financial Services |
|---|---|---|
| Customer deposit at start | None (or £0 to nominal) | £8,500 to £12,500 (typical 8 to 12% deposit) |
| Monthly figure | ~£1,600 gross sacrifice (includes insurance, maintenance, breakdown) | ~£1,200 monthly PCP payment + insurance and maintenance separately (~£200/month) |
| Net monthly cost to take-home (higher-rate) | ~£1,050 after income tax / NI relief, plus average BIK over 5 years (~£220/month) | ~£1,400 from post-tax income (PCP + insurance + maintenance) |
| Effective gross-salary cost | ~£1,750/month equivalent | ~£2,330/month gross-salary equivalent (£1,400 post-tax requires £2,330 gross at 40% marginal) |
| End-of-contract | Hand back the car; no balloon, no equity risk | Pay balloon (~£35,000 to £40,000) to keep, hand back, or part-exchange |
The bottom line: sal-sac saves a higher-rate UK taxpayer roughly £600 to £750 per month in gross-salary-equivalent cost on a 5-year EQS 450+ contract. Over five years that is roughly £35,000 to £45,000 of net savings, against approximately £15,000 to £20,000 of net BIK tax paid across the rising-rate trajectory. The math is favourable but it requires the right scheme provider to write the policy at this P11D level.
When PCP is the rational answer instead
Three scenarios where the sal-sac story collapses on an EQS:
- No premium sal-sac scheme available. If your employer only offers Octopus EV or Loveelectric standard schemes, the EQS is out and the EQE (sub-£80,000 P11D, fits within all standard caps) is the rational substitute.
- You earn under the higher-rate threshold. Basic-rate (20%) taxpayer sal-sac savings on an EQS are roughly 60% of the higher-rate savings; PCH (personal contract hire) at Carwow’s manufacturer-rate-supported rate can be competitive.
- You want to keep the car at the end of the term. Sal-sac is a return-the-car structure. If you want ownership, PCP (or HP) is the right framework; you pay the balloon, take the title, and the depreciation risk is yours.
Our take
For a UK higher-rate or additional-rate taxpayer with access to Tusker premium tier or a corporate-bespoke sal-sac arrangement, the Mercedes EQS 450+ on a 5-year sal-sac is one of the few six-figure premium EVs where the math genuinely beats a PCP on net cost. The 580 4MATIC and AMG EQS 53 require executive-tier arrangements that few employers offer. The volume sal-sac play on Mercedes EV remains the EQE saloon (under £80,000 P11D, fits within all major scheme caps); see our Polestar 4 vs Mercedes EQE sal-sac comparison for the head-to-head. If you are a P3 buyer who wants the EQS and has no sal-sac access, a 5-year PCP through Mercedes-Benz Financial Services with a £10,000 deposit and a residual-supported balloon is the rational route; the BIK savings simply do not materialise outside the sal-sac structure. Either way, the EQS at the £107,000 P11D entry point is the rational choice in the saloon line-up; the 580 4MATIC’s extra power is rarely worth £20,000 more on P11D once you factor BIK ramp.
Is the Mercedes EQS eligible for UK salary sacrifice?
How much does the Mercedes EQS 450+ cost on UK salary sacrifice?
EQS vs PCP: which is cheaper on a 5-year contract?
Is the EQS 580 4MATIC worth the extra P11D over the 450+?
What is the WLTP range of the EQS saloon?
Should I get the EQS saloon or the EQS SUV?
Related reading on CDE
Buyer action
EV and salary-sacrifice checks
Use this as the final check before paying a deposit, signing finance paperwork or relying on a headline monthly figure.
