Extend and Increase Windfall Tax on Oil and Gas Giants
Labour · what the evidence says
An independent, source-checked look at Labour’s policy “Extend and Increase Windfall Tax on Oil and Gas Giants” — what it would actually do across the things that affect your life. Every claim below quotes the source behind it. How this works.
Public finances & the next generation — Helps
minor · moderate confidence
Extending and increasing the windfall tax raises extra revenue — around £1–1.2 billion a year — that reduces the gap between spending and income, modestly improving the near-term fiscal position. The main caveat is that if the tax accelerates North Sea decline faster than forecast, the long-run tax base from the sector shrinks, partly offsetting the gain.
The evidence
- The policy extends the Energy Profits Levy sunset clause to the end of the next parliament, raises the rate by three percentage points, and removes investment allowances deemed unjustifiably generous. — labour.org.uk (manifesto) — “extend the sunset clause of the Energy Profits Levy until the end of the next parliament and increase the levy rate by three percentage points. They will also remove 'unjustifiably generous' investment allowances”
- The stated aim is to fund clean energy investments from company profits. — labour.org.uk (manifesto) — “aiming to fund clean energy investments from company profits rather than ingenuity or investment”
- Labour projects the measures will raise an average of £1.2 billion per year across the next parliament, totalling £10.8 billion over five years. — energyvoice.com (media) — “Labour anticipates these measures will raise an average of £1.2 billion per year across the next Parliament, amounting to £10.8 billion over the five years from 2024-25”
- The IFS noted a lower expectation of 'just over £6 billion' across the parliament from strengthening the EPL, implying significant uncertainty in the revenue estimate. — ifs.org.uk (institutional) — “The Institute for Fiscal Studies (IFS) also noted Labour's expectation to raise "just over £6 billion" across the next parliament from strengthening the EPL”
- The OBR anticipated the EPL remaining in place until March 2030, contributing to public finances. — globalenergynetwork.net (media) — “The Office for Budget Responsibility (OBR) also anticipates the EPL remaining in place until March 2030, contributing to public finances”
- The IFS noted Labour's green prosperity plan involves £5 billion a year, partly funded by the windfall tax, meaning revenue offsets borrowing for that spending programme. — ifs.org.uk (institutional) — “Labour's "green prosperity plan" involves £5 billion a year, partly funded by the windfall tax”
- Industry body OEUK (advocacy source) warned that increased tax burden and removal of allowances will severely deter new North Sea investment, which could erode future tax revenues. — energyindepth.org (media) — “Offshore Energies UK (OEUK) warns that the increased tax burden and removal of investment allowances will severely deter new investment in the North Sea”
- EPL revenue has already declined from £4.2 billion to £2.7 billion as production and profits fell, illustrating how the tax base can shrink. — agcc.co.uk (media) — “Revenue specifically from the EPL decreased from £4.2 billion to £2.7 billion over the same period”
Biggest unknown: Whether the accelerated removal of investment allowances causes a larger-than-expected collapse in North Sea activity and future tax revenues, turning a near-term fiscal gain into a longer-run loss.
Our reading: On the fiscal fundamentals that O12 measures — funded vs borrowed spending, debt-path sustainability, consumption vs investment — this policy has a clear near-term positive: it raises additional revenue (IFS and OBR both acknowledge the levy contributes to public finances, even if their estimates sit well below Labour's £10.8 billion headline). That revenue directly reduces the funding gap for the green prosperity plan, meaning less borrowing is required for that spending envelope. This is the primary channel by which the policy 'improves' O12 in the near term. The long-run picture is more uncertain. Industry advocacy bodies (OEUK, AGCC) — which must be flagged as having a clear interest — argue that removing investment allowances and raising the rate will accelerate North Sea decline, shrinking the future tax base and costing economic value. These claims are not independently verified by institutional sources in the provided evidence; IFS and OBR are cited only on the revenue side. The asymmetry in sourcing means the negative long-run fiscal feedback cannot support a 'mixed' or 'worsens' verdict on O12 alone — it is a genuine uncertainty, not an established projection. The revenue itself funds investment (clean energy) rather than consumption transfer payments, which is the more fiscally sustainable use of windfall receipts under the O12 rubric. The gap between Labour's £10.8 billion and IFS's ~£6 billion reflects real uncertainty about how quickly activity declines under the higher rate, but even the lower IFS figure represents a meaningful near-term fiscal improvement at modest magnitude relative to overall public finances. Confidence is moderate rather than high because the revenue range is wide and the long-run tax-base erosion is a plausible but unquantified risk from non-independent sources.
Prosperity & living standards — Mixed picture
moderate · low confidence
Taxing oil and gas profits more heavily will likely shrink North Sea investment and jobs in the near term, but the revenues are meant to fund clean energy that could improve long-run living standards and energy security. Whether the long-run gains outweigh the near-term costs depends heavily on how effectively the revenue is deployed — and most of the alarming job and output figures come from the industry itself.
The evidence
- The policy extends the Energy Profits Levy sunset clause to end of the next parliament, increases the rate by three percentage points, removes investment allowances, and aims to fund clean energy investments. — labour.org.uk (manifesto) — “extend the sunset clause of the Energy Profits Levy until the end of the next parliament and increase the levy rate by three percentage points. They will also remove 'unjustifiably generous' investment allowances and ret…”
- Labour projects the measures will raise around £1.2 billion per year, totalling £10.8 billion over the parliament. — energyvoice.com (media) — “Labour anticipates these measures will raise an average of £1.2 billion per year across the next Parliament, amounting to £10.8 billion over the five years from 2024-25”
- The IFS noted Labour's green prosperity plan involves £5 billion a year, partly funded by the windfall tax. — ifs.org.uk (institutional) — “Labour's "green prosperity plan" involves £5 billion a year, partly funded by the windfall tax”
- As of early 2024, oil and gas met 75% of the UK's energy needs, so domestic production decisions have material economic significance. — oeuk.org.uk (media) — “As of February 2024, 75% of the UK's energy needs were met by oil and gas”
- Industry body OEUK (an advocacy source) warns the increased tax will severely deter new investment in the North Sea. — energyindepth.org (media) — “Offshore Energies UK (OEUK) warns that the increased tax burden and removal of investment allowances will severely deter new investment in the North Sea”
- OEUK (advocacy) claims 42,000 jobs could be lost and £26 billion of economic value wiped out without new investment. — oeuk.org.uk (media) — “OEUK has warned that without new investment, 42,000 jobs could be lost, and £26 billion of economic value could be wiped out, with effects potentially felt immediately”
- OEUK (advocacy) also warns the levy could damage wider investment in clean energy projects if companies redirect funds elsewhere. — oeuk.org.uk (media) — “the extended and increased levy could "damage wider investment" in these critical clean energy projects if companies redirect funds to other regions with more favourable tax regimes”
- Reports indicate banks have already reduced loans to UK oil and gas producers since the EPL's introduction, raising investment viability concerns. — energyindepth.org (media) — “banks have already reduced loans to UK oil and gas producers since the EPL's introduction in 2022, leading to concerns that the sector has become "impractical" for investment”
Biggest unknown: Whether the clean energy investments funded by the levy will generate enough long-run productivity and energy-security gains to offset the near-term contraction in North Sea output, employment and supply-chain activity.
Our reading: This policy creates a genuine dual-horizon tension for O13. In the near term, the higher tax rate and removal of investment allowances will reduce expected returns on North Sea projects. The IFS — a credible independent source — confirms the revenue expectation is real but lower than Labour's own figures (£6bn vs £10.8bn). The banking credit contraction already observed since 2022 provides grounded evidence that investment has already been chilling, and extending the levy entrenches that signal. Near-term, this implies some contraction in a sector that, per ONS-backed figures, still supplies 75% of UK energy needs — with real knock-on effects on supply-chain employment and regional economies (particularly Scotland). The job-loss and economic-value figures (42,000 jobs, £26bn) come exclusively from OEUK, an industry advocacy body, and must be treated as an upper-bound estimate rather than an independent projection. No institutional source (IFS, OBR) has independently validated these magnitudes. On the long-run side, the revenue is intended to fund a £5bn/year green prosperity plan. If that capital is effectively deployed into clean energy infrastructure, it could improve energy security, reduce import dependency, and lift productivity — genuine O13 improvements. However, this pipeline relies on a second policy instrument (the green investment plan) and is not delivered by the levy itself; the levy only raises the revenue. That makes the long-run 'improves' conditional and indirect. On balance, the near-term cost to North Sea investment and related employment is moderately evidenced by the credit-market data and the IFS revenue gap. The long-run gain is plausible but uncertain, contingent on effective deployment of revenue. 'Mixed' is the honest verdict: real near-term costs in one part of the tradeable economy, real but contingent long-run gains. Confidence is low because the industry figures dominate the evidence base and no independent body has modelled the net O13 effect.
Cost of living — Mixed picture
moderate · low confidence
This tax could raise billions to fund cheaper clean energy, which might lower bills in the long run — but if it deters North Sea investment and the UK imports more energy, prices could go up instead. Which effect wins is genuinely unclear from the evidence.
The evidence
- The policy aims to fund clean energy investments from company profits. — labour.org.uk (manifesto) — “aiming to fund clean energy investments from company profits rather than ingenuity or investment”
- Labour projects the measures will raise around £1.2 billion per year, totalling £10.8 billion over five years. — energyvoice.com (media) — “Labour anticipates these measures will raise an average of £1.2 billion per year across the next Parliament, amounting to £10.8 billion over the five years from 2024-25”
- The IFS estimated Labour expected to raise just over £6 billion across the parliament from strengthening the EPL — a notably lower figure than Labour's own projection. — ifs.org.uk (institutional) — “Labour's expectation to raise "just over £6 billion" across the next parliament from strengthening the EPL”
- The revenue is partly intended to fund a green prosperity plan costing around £5 billion a year. — ifs.org.uk (institutional) — “Labour's "green prosperity plan" involves £5 billion a year, partly funded by the windfall tax”
- As of February 2024, oil and gas met 75% of the UK's energy needs. — oeuk.org.uk (media) — “75% of the UK's energy needs were met by oil and gas”
- Industry groups warn that lower domestic production will increase UK reliance on imported energy, potentially from less stable sources. — agcc.co.uk (media) — “decreasing domestic production will heighten the UK's reliance on imported energy, potentially from less stable international sources”
- OEUK warned the tax could result in an overall loss in economic value of approximately £13 billion. — energyindepth.org (media) — “the tax would result in an overall loss in economic value of approximately £13 billion”
- Industry warns that the increased tax burden will severely deter new investment in the North Sea. — energyindepth.org (media) — “the increased tax burden and removal of investment allowances will severely deter new investment in the North Sea”
Biggest unknown: Whether reduced domestic oil and gas production actually pushes up UK energy import costs enough to outweigh any consumer benefit from clean-energy investment funded by the levy.
Our reading: The policy's direct route to improving cost of living is indirect: it raises revenue from oil and gas company profits, which is earmarked to fund clean energy investment. If that investment succeeds, it could reduce household energy bills over the long term. The revenue projections are substantial (Labour claims £10.8bn; the IFS puts it lower at ~£6bn), so the fiscal headroom for investment is real — but whether that translates into consumer bill reductions depends entirely on how clean energy investment is deployed and how quickly it comes online. On the other side, the risk to cost of living is through energy security. Three-quarters of UK energy needs are currently met by oil and gas. If the levy deters enough North Sea investment to accelerate production decline, the UK imports more — and import prices are volatile and often higher. OEUK and related industry bodies project severe deterrence effects, job losses, and a £13bn economic value loss. However, all the negative projections come from industry bodies (OEUK, Aberdeen Chamber) with a direct interest in opposing the levy; they are not corroborated by independent institutional sources in the evidence provided. That asymmetry — stated revenue benefit vs industry-sourced harm estimate — means neither side of the ledger is firmly established. The net effect on O2 is therefore mixed and uncertain: a plausible long-run improvement through clean energy funding, offset by a plausible near-term worsening through energy import dependence. Confidence is low because the deciding parameters — how much investment actually falls, and how quickly clean energy lowers bills — are not resolved by the provided evidence.
Good work & fair pay — Mixed picture
moderate · low confidence
The policy risks accelerating job losses in the North Sea oil and gas sector while funding clean energy investment that could create new jobs, but the net effect on workers is genuinely unclear. The job-loss figures come mainly from industry groups with a direct interest, and the evidence on clean-energy job creation is absent from what has been provided.
The evidence
- The policy extends and increases the Energy Profits Levy and removes investment allowances, aiming to fund clean energy investments. — labour.org.uk (manifesto) — “fund clean energy investments from company profits rather than ingenuity or investment”
- OEUK warns that without new investment, 42,000 jobs could be lost, with effects potentially felt immediately. — oeuk.org.uk (media) — “OEUK has warned that without new investment, 42,000 jobs could be lost, and £26 billion of economic value could be wiped out, with effects potentially felt immediately”
- Industry predicts accelerated decline in North Sea production, with a total tax burden of 78% among the highest worldwide, making the UK a profoundly uncompetitive market. — agcc.co.uk (media) — “accelerated decline in North Sea oil and gas production, making the UK a profoundly uncompetitive market globally with a total tax burden of 78% being among the highest worldwide”
- The IFS noted that Labour's green prosperity plan involves £5 billion a year, partly funded by the windfall tax. — ifs.org.uk (institutional) — “Labour's "green prosperity plan" involves £5 billion a year, partly funded by the windfall tax”
- Industry warns the extended levy could damage wider investment in clean energy projects if companies redirect funds elsewhere. — oeuk.org.uk (media) — “the extended and increased levy could "damage wider investment" in these critical clean energy projects if companies redirect funds to other regions with more favourable tax regimes”
Biggest unknown: Whether clean-energy jobs funded by the levy replace North Sea jobs at comparable scale, location, and pay — and whether the industry job-loss warnings are realistic or overstated.
Our reading: This policy creates a direct tension within O4. On the downside, the levy increase and removal of investment allowances — as warned by industry bodies including OEUK — risk accelerating the decline of North Sea oil and gas production, with projected job losses of up to 42,000 and an internationally uncompetitive total tax burden of 78%. These are serious impacts on workers in a concentrated regional labour market (especially Scotland). On the upside, the stated intent is to fund a £5bn/year green prosperity plan, which could generate employment in clean energy. However, there is no evidence in the provided units quantifying those clean-energy jobs, their location, or whether they match the skills and wages of displaced North Sea workers. The mixed verdict reflects both sides being plausible but both being uncertain: the job-loss figures come exclusively from industry advocacy groups (OEUK, AGCC, energyindepth.org) with a clear interest in opposing the levy, not from independent modelling; confidence is accordingly low. The clean-energy job-creation upside is entirely unquantified in the provided evidence. Net effect on O4 is genuinely split: negative pressure on existing high-paying energy-sector jobs, unclear positive from new clean-energy employment. Time horizon is this-parliament given both the levy extension period and the investment chilling effects anticipated immediately.
Clean environment & nature — Helps
minor · low confidence
By taxing oil and gas profits more heavily and funding clean energy, this policy nudges the UK away from fossil fuels over time — but how much it helps the climate depends on whether domestic production is replaced by renewables or just imported gas, which is uncertain.
The evidence
- The policy aims to fund clean energy investments from company profits. — labour.org.uk (manifesto) — “aiming to fund clean energy investments from company profits rather than ingenuity or investment”
- Labour's green prosperity plan involves £5 billion a year, partly funded by the windfall tax revenue. — ifs.org.uk (institutional) — “Labour's "green prosperity plan" involves £5 billion a year, partly funded by the windfall tax”
- Industry groups warn that the extended levy could damage investment in clean energy projects if companies redirect funds to more favourable tax regimes. — oeuk.org.uk (media) — “the extended and increased levy could "damage wider investment" in these critical clean energy projects if companies redirect funds to other regions with more favourable tax regimes”
- Industry predicts an accelerated decline in North Sea oil and gas production under the increased tax burden. — agcc.co.uk (media) — “Industry leaders predict an accelerated decline in North Sea oil and gas production, making the UK a profoundly uncompetitive market globally”
- Industry groups warn that decreasing domestic production will heighten the UK's reliance on imported energy, potentially from less stable sources. — agcc.co.uk (media) — “decreasing domestic production will heighten the UK's reliance on imported energy, potentially from less stable international sources”
Biggest unknown: Whether reduced North Sea output is substituted by lower-carbon renewables (climate benefit) or by higher-emission imported LNG (no net climate gain or worse).
Our reading: For O6, the relevant channels are: (1) does the policy reduce the UK's fossil fuel trajectory? and (2) does it accelerate clean energy investment? On (1), the policy deters new North Sea oil and gas investment, which over the long term should reduce domestic fossil fuel production. This is directionally positive for the climate, provided the gap is filled by renewables rather than imported LNG (which carries comparable or higher lifecycle emissions). On (2), the policy explicitly routes revenue toward a clean energy programme worth ~£5bn/year, which — if delivered — would materially improve the UK's emissions trajectory. Both channels point toward a long-term improvement in O6, earning a direction of 'improves'. However, the magnitude is constrained to 'minor' for two reasons. First, most of the negative-investment evidence comes from industry advocacy bodies (OEUK, energyindepth.org, AGCC), which must be flagged and down-weighted; their warnings about deterring clean energy investment (E18) cannot be treated as independent analysis. Second, the cited IFS evidence (E17) is the only institutional source and speaks only to the stated funding intention, not to the delivered climate effect. The substitution question — renewables vs imported LNG — is the decisive crux and is entirely unresolved by the evidence provided. Near-term, the effect is negligible to marginally positive (some clean-energy revenue, no immediate production change); long-term it is more clearly positive if the clean energy plan fires as intended. The verdict leans 'improves' because the policy both deters new fossil investment and explicitly funds clean energy, but confidence is low given the thin institutional evidence base on the climate channel specifically.