PAS 2060 Carbon Neutral Calculator | Demonstration & ISO 14068-1 Migration
Compute the carbon-neutral balance for an organisation — gross footprint minus within-boundary removals minus retired credits — and test it against the four PAS 2060 demonstration stages, on a GHG Protocol and IPCC AR6 GWP-100 footprint basis.
What this calculator does. It produces two distinct outputs from the same set of inputs. The first is an objective carbon-neutral balance: gross emissions, minus within-boundary removals, minus retired offset credits, resolved to a net position in tonnes of CO2e. The second is an interpretive PAS 2060 demonstration verdict: whether the entity has satisfied the four stages the standard requires — quantification, reduction, offsetting, and documentation through a Qualifying Explanatory Statement. A balance can reach net zero while the demonstration verdict remains “not achieved”; the two are scored separately and never collapsed into one number.
Footprint basis. The calculator ingests a pre-aggregated greenhouse-gas inventory expressed in tonnes CO2e. That inventory is built upstream on the GHG Protocol Corporate Standard with IPCC AR6 GWP-100 characterisation factors (see the AR6 GWP values). This tool performs no GWP weighting of its own and does not build an inventory — it consumes one. Bring your Scope 1, Scope 2, and Scope 3 totals from a completed inventory such as the output of the ISO 14064-1 inventory calculator.
Subject scope. Version 1 demonstrates carbon neutrality at the organisation level only. PAS 2060 also defines product, service, event, town, and family subjects; those subject types are present but disabled in this release and are described as roadmap items in the scope section below.
What is fixed by the standard, and what is a GreenCalculus default. PAS 2060:2014 specifies the four-stage process and the requirement for a credible carbon-management plan, but it fixes no numeric minimum reduction percentage and no single offset-quality threshold. The pass marks this engine applies to each stage, and the supporting reference values, are GreenCalculus engine defaults that operationalise the standard for scoring purposes — they are not fixed by PAS 2060 and are not read from a data layer. They are stated plainly in the data-sources section so a reader can distinguish the standard’s requirements from this tool’s operationalisation of them.
Stage 1Subject & declaration
Define what the declaration covers, the boundary and consolidation approach, the reporting period and baseline, and the type of carbon-neutral declaration.
Stage 1Carbon footprint
Enter your own inventory totals in tCO₂e (from ISO 14064-1 / GHG Protocol). This is an auditor — it does not estimate your footprint for you.
Estimate within-boundary removals from area (optional)
Tier-1 annual sequestration from MasterBrain (IPCC AR6). For owned/controlled land inside your boundary — not for purchased credits.
Stage 2Reduction & management plan
PAS 2060 requires reduction before offsetting. Offsetting with no documented plan is non-conformant — a hard gate in this tool. Renewal declarations must demonstrate an actual reduction against the baseline.
Stage 3Offsetting
One line per retired credit tranche. PAS 2060 requires the entire residual to be compensated, with credits retired / cancelled within 12 months of the declaration. Quality attributes drive the offsetting stage.
Stage 4Documentation & QES
The Qualifying Explanatory Statement is assembled from your inputs above — the card below shows what is present and what is missing. State how the declaration is validated.
Audit mode adds the full per-datapoint conformity scoring table.
Enter your footprint and offsets above to test the carbon-neutral declaration
Reconciliation (100%-compensation), PAS 2060 conformity (four-stage gateway ladder), a credit-quality audit, a Qualifying Explanatory Statement draft, an ISO 14068-1 transition map, and exportable JSON / CSV / QES reports appear after calculation.
This is a GreenCalculus alignment indicator against PAS 2060:2014, not a PAS 2060 / BSI certification and not a substitute for independent validation/verification (e.g. under ISO 14064-3). PAS 2060 has been superseded by ISO 14068-1:2023 — for new claims, see the ISO 14068 calculator and the transition panel above. The conformity band reflects a transparent GreenCalculus interpretation of the standard’s published structure; the 12-month retirement window, the de-minimis coverage threshold, the vintage window and the gateway thresholds are documented defaults exposed in the methodology drawer and every export. Credit-project quality is taken from your own attestations — this tool does not independently verify any specific carbon-credit project or registry record. PAS 2060 is copyrighted; requirements are paraphrased and cited by stage. PAS 2060 standard notes.
Reaching net zero on paper and demonstrating carbon neutrality to a recognised standard are not the same achievement. An organisation can buy enough credits to cancel its entire footprint and still fall short of a credible carbon-neutral claim — because the standard asks what was reduced before anything was offset, and whether the claim was documented in a form a third party can check.
PAS 2060 is a demonstration discipline, not an arithmetic one: the balance is the easy part, the demonstration is the test.
PAS 2060 demonstrates carbon neutrality through four stages: quantify the footprint, reduce it under a carbon-management plan, offset the residual with eligible credits, then document the claim in a Qualifying Explanatory Statement. The standard sets no minimum reduction percentage.
What this calculator determines
The calculator answers two questions that practitioners routinely conflate: is the entity carbon neutral by the numbers, and does it demonstrate carbon neutrality the way PAS 2060 requires. Keeping them apart is the whole point.
The carbon-neutral balance
The balance is deterministic arithmetic. Gross emissions across Scope 1, Scope 2, and the declared Scope 3 boundary are summed; any within-boundary removals are subtracted to give the residual footprint; retired offset credits are then subtracted from that residual to give the net position. When retired credits equal the residual, the net position is zero — carbon neutral by balance. Nothing interpretive enters this calculation; it is the same number any auditor would reconstruct from the inputs.
The PAS 2060 demonstration verdict
The verdict is interpretive. It scores the entity against the four stages the standard requires and applies several hard gates — a residual offset without a carbon-management plan, or less than full compensation of the residual, blocks a positive verdict regardless of how the balance resolves. The verdict can therefore read “not achieved” on an entity whose balance is net zero, and that gap is the standard’s central anti-greenwashing mechanism rather than a defect in the tool.
The balance and the verdict are computed separately. A net-zero balance is necessary but not sufficient for a PAS 2060 demonstration — the standard also requires a reduction commitment, eligible offsets, and a documented claim. Buying credits alone clears the arithmetic, not the standard.
PAS 2060 is withdrawn: what that means now
This is the question most practitioners arrive with, so it is worth answering plainly before the mechanics. PAS 2060:2014 has been superseded by ISO 14068-1:2023, the first international standard for carbon neutrality. BSI, which published PAS 2060, has withdrawn it and moved carbon-neutrality verification to ISO 14068-1.
What “withdrawn” does and does not mean
Withdrawal of the publicly available specification does not retroactively void declarations made under it, and existing PAS 2060 documentation remains a historical record of how a claim was constructed at the time. What changes going forward is the destination standard: a new carbon-neutrality claim seeking independent verification is verified against ISO 14068-1, not PAS 2060. Organisations with a live PAS 2060 declaration are migrating their carbon-management plans and Qualifying Explanatory Statements onto the ISO 14068-1 structure, which is why this calculator pairs directly with the ISO 14068-1 carbon neutrality calculator.
Reported withdrawal dates vary across BSI sources because “withdrawn” is used for two different events — the cessation of BSI’s PAS 2060 verification service, and the formal withdrawal of the document itself. This page deliberately states the supersession qualitatively and prints no single date. Confirm the date that matters for your use case directly with BSI before citing one in a declaration.
Why this calculator still exists
Three reasons. Practitioners need to interpret legacy PAS 2060 declarations that are still in circulation; the four-stage logic is the conceptual ancestor of ISO 14068-1 and the cleanest way to learn the discipline; and the migration itself requires a side-by-side reading of what PAS 2060 asked for against what ISO 14068-1 now asks for. The comparison section below maps that migration explicitly.
The four-stage demonstration framework
PAS 2060 structures carbon neutrality as a sequence, not a single act. The order matters: each stage assumes the one before it is complete, and the standard’s integrity rests on reduction preceding offsetting.
1 · Quantify
Determine the carbon footprint of the defined subject across the relevant scopes, on a recognised quantification basis (GHG Protocol or ISO 14064-1). The boundary and the scopes included are declared explicitly.
2 · Reduce
Commit to and act on reductions through a documented carbon-management plan with targets and a timeline. PAS 2060 requires a credible reduction commitment but fixes no numeric minimum percentage.
3 · Offset
Compensate the residual footprint in full with eligible carbon credits — additional, permanent, independently verified, and retired within the qualifying period. Partial compensation does not demonstrate neutrality.
4 · Declare
Document the claim in a Qualifying Explanatory Statement: the subject, the boundary, the footprint, the reduction commitment, the offsets used, and the type of declaration. The QES is the artefact a third party verifies.
The reduction commitment is a gate, not a decoration
The sequence enforces a mitigation hierarchy: reduce what you can before compensating what remains. Offsetting a residual with no carbon-management plan behind it fails the demonstration even when the balance reaches zero. This is why the calculator treats the reduction commitment as a hard gate on the verdict rather than as a discount on the balance.
Reduce before you offset. A residual cancelled by credits is carbon neutral by balance; a residual cancelled by credits with no plan to shrink it is not a PAS 2060 demonstration.
Achievement versus renewal
PAS 2060 distinguishes two declaration types, and they are scored differently. A declaration of achievement attests that neutrality has been reached for a defined period through full compensation of the residual. A declaration of renewal, made for a subsequent period, additionally requires evidence of a demonstrated reduction over the prior period — a renewal with zero or absent reduction fails the demonstration even if its balance is again net zero. The reduction requirement that is a commitment at first achievement becomes a track record at renewal.
Offsets, removals, and credit eligibility
Two different things can take a residual footprint down toward zero, and PAS 2060 treats them differently. Within-boundary removals reduce the residual before any offsetting; offset credits compensate whatever residual remains.
| Dimension | Within-boundary removal | Offset credit |
|---|---|---|
| Where it sits | Inside the entity’s own boundary — its own land, assets, operations | Outside the boundary — a project the entity finances but does not operate |
| Effect on the balance | Subtracted from gross to give the residual | Subtracted from the residual to give the net position |
| Eligibility test | Measurable, monitored, attributable to the entity | Additional, permanent, independently verified, retired in-period |
| Counts as an offset? | No — it lowers the residual, it is not a credit | Yes — it is the compensation instrument |
Removals versus avoidance, and the shift over time
Eligible credits divide into avoidance (a project that prevents emissions that would otherwise occur) and removal (a project that takes CO2 out of the atmosphere). Both are recognised, but credit-integrity programmes increasingly weight durable removals more heavily as the credible long-term instrument. Credits used for compensation should carry recent vintages and a clear durability profile; a stale vintage or an opaque permanence claim weakens the demonstration even where the headline tonnage matches.
Credit integrity
The eligibility tests are operationalised through recognised crediting programmes. Credits verified under the Verra VCS programme or issued as Gold Standard credits carry the additionality, permanence, and verification machinery PAS 2060 expects; the calculator’s offsetting gate is built around the presence of that machinery, not around a particular registry.
Within-boundary removals are not credits. Subtract them from your gross footprint to find the residual, then offset the residual. Counting your own forestry removals a second time as if they were purchased credits double-counts and inflates the claimed compensation.
How this calculator works
The engine runs two independent passes. The balance pass is pure arithmetic on tonnes; the conformance pass scores the four stages and applies the hard gates. The two passes share inputs but never share logic, and a value used in one is never silently reused in the other.
Inputs
Gross Scope 1, Scope 2, and declared Scope 3 totals in tCO2e; optional within-boundary removals; retired credit tonnage with vintage and durability; reduction evidence and carbon-management-plan status; declaration type (achievement or renewal).
Balance pass
Net position = gross − within-boundary removals − retired credits. Deterministic, auditable, and the same figure for any reviewer working from the same inputs.
Conformance pass
Each stage is scored against an engine pass mark; hard gates (offset without a plan, less than full compensation, retirement outside the window, absent reduction at renewal) can block a positive verdict outright.
The reduction percentage feeds the conformance verdict only. It is never subtracted from the balance. A 40% reduction does not remove 40% of your tonnes — your gross footprint is whatever your inventory says it is, and the balance subtracts only removals and retired credits. Treating a reduction percentage as a balance deduction overstates neutrality and is the most common modelling error this tool guards against.
Worked example
An organisation completes its inventory and brings the following pre-aggregated totals to the demonstration. All figures are illustrative and fixed for this example.
| Line | Value (tCO2e) |
|---|---|
| Scope 1 | 8,000 |
| Scope 2 (location-based) | 12,000 |
| Scope 3 (declared boundary) | 30,000 |
| Gross footprint | 50,000 |
| Within-boundary removals | −2,000 |
| Residual footprint | 48,000 |
| Retired eligible credits | −48,000 |
| Net position | 0 |
Two things to read carefully. First, the credits required equal the residual, not the gross: 48,000, because 2,000 of within-boundary removals were subtracted first. With no removals, the residual would be the full 50,000 and 50,000 of credits would be needed. Second, suppose this entity also reports a 40% reduction against its prior-year footprint. That figure does not appear anywhere in the balance above — it is not subtracted from the 50,000, and the credits required are unchanged at 48,000. The reduction percentage feeds only the conformance verdict.
And that is where the same balance can earn opposite verdicts. An entity that offsets the 48,000 residual with eligible credits and carries a credible carbon-management plan and a documented QES demonstrates carbon neutrality. An entity with the identical net-zero balance but no carbon-management plan behind the offset fails the reduction gate — net zero by arithmetic, not achieved by the standard.
PAS 2060 vs ISO 14068-1 vs SBTi net zero
Three frameworks are routinely confused because all three concern the relationship between a footprint and a target. They answer different questions, and choosing the wrong one is a scoping error before any number is entered.
| Dimension | PAS 2060:2014 | ISO 14068-1:2023 | SBTi Net Zero |
|---|---|---|---|
| Question answered | Can carbon neutrality be demonstrated now? | Can carbon neutrality be demonstrated now, to an international standard? | Is the long-term decarbonisation trajectory science-aligned? |
| Status | Withdrawn — superseded by ISO 14068-1 | Current international standard | Current; corporate net-zero standard |
| Role of offsets | Full compensation of residual required | Compensation permitted; durable removals emphasised over time | Residual neutralisation only after ~90–95% deep cuts |
| Reduction requirement | Credible commitment; no fixed percentage | Reduction plan required; mitigation hierarchy enforced | Explicit science-based reduction pathway |
| Time horizon | Per declared period (annual cycle) | Per declared period, transition-oriented | Near-term plus long-term (typically 2050) |
Migration: PAS 2060 to ISO 14068-1
For organisations moving a live declaration across, the structure is broadly preserved — quantification, reduction, compensation, and documentation all reappear in the international standard — but ISO 14068-1 formalises the mitigation hierarchy and places greater emphasis on durable removals and a transition plan. The cleanest path is to run the same inventory through the ISO 14068-1 carbon neutrality calculator and compare the two verdicts before retiring the PAS 2060 documentation.
Demonstrating neutrality today
Use ISO 14068-1 for any new claim seeking verification; use PAS 2060 only to interpret a legacy declaration. The PAS 2060 calculator remains the reference for those legacy claims.
Setting a long-term target
Neither neutrality standard sets a science-based pathway. For a trajectory aligned to 1.5 °C, model the target with the SBTi net-zero target calculator.
Building the inventory first
All three frameworks consume a completed footprint. Build it on a recognised basis with the ISO 14064-1 inventory calculator before attempting any demonstration.
Common scoping and conformance errors
Offsetting without a plan
Cancelling the residual with credits while having no carbon-management plan. The balance reaches zero; the reduction gate fails. Reduction precedes offsetting in PAS 2060, not the reverse.
Treating reduction % as a balance deduction
Subtracting a reduction percentage from the gross footprint. The reduction figure is conformance-side only and never lowers the tonnes; the credits required are set by the residual, not by the reduction.
Partial compensation
Offsetting most but not all of the residual and claiming neutrality. PAS 2060 requires full compensation; anything less does not demonstrate neutrality regardless of how close the balance comes.
Double-counting removals
Subtracting within-boundary removals from gross and then also counting them as purchased credits. Removals lower the residual once; they are not also compensation.
Renewal with no demonstrated reduction
Filing a renewal declaration without evidence of reduction over the prior period. A renewal demands a track record, not just another full compensation — zero reduction fails the renewal gate.
Stale or opaque credits
Compensating with old vintages or credits whose permanence is unclear. The tonnage may match while credit integrity does not, weakening the demonstration the standard is meant to certify.
Scope and boundary of this tool
Knowing what the calculator does not do is as important as knowing what it does. The boundaries below are deliberate for version 1.
| Aspect | In scope (v1) | Out of scope / roadmap |
|---|---|---|
| Subject type | Organisation-level demonstration | Product, service, event, town, family subjects — present but disabled, “coming soon” |
| Inventory | Consumes a pre-aggregated tCO2e footprint | Does not build the inventory or apply GWP weighting |
| Verdict | Indicative demonstration scoring against the four stages | Not an independent verification or certification |
| Offsets | Tonnage, vintage, durability inputs and an eligibility gate | Does not transact, retire, or validate specific credits |
A positive verdict from this calculator is not verification. PAS 2060 demonstration is established through independent third-party assessment or self-validation against the standard; this tool indicates whether the four stages appear satisfied so you can prepare for that assessment. It does not replace it.
Data sources and methodology transparency
This calculator is intentionally light on external data, because PAS 2060 is a conformance framework rather than a factor table. There is no PAS 2060 parameter set to look up — the standard specifies a process, not numbers.
What is read from the data layer
Exactly one optional helper reads live data: a within-boundary removal estimator that converts an area and a land type into an annual removal tonnage, drawn from IPCC AR6 Tier-1 removal factors for forestry (tropical, temperate broadleaf, temperate conifer, boreal) and soil (improved grassland, cover cropping). It assists the removals input only; it does not touch the conformance logic, and engineered-removal pathways such as direct air capture or BECCS are not covered. Every other value the engine uses is either a user input or a stated engine default.
What is a GreenCalculus engine default
The pass marks the engine applies to each of the four stages, the full-compensation requirement, the credit-retirement window, the vintage-staleness window, and the coverage threshold used as a soft warning are all GreenCalculus defaults that operationalise PAS 2060 for scoring. They are not fixed by the standard and are not read from a data layer. PAS 2060:2014 itself sets no numeric minimum reduction percentage; the engine therefore applies none, requiring instead a reduction commitment and carbon-management plan (and, at renewal, a demonstrated reduction above zero). Any reference reduction rate shown is informational — a transition signal toward ISO 14068-1 — and does not gate the PAS 2060 verdict. The coverage figure used to flag a thin Scope 3 boundary is a GreenCalculus soft-warning default, not a PAS 2060 source-level rule.
Footprint and GWP basis
The input inventory is built on the GHG Protocol Corporate Standard with IPCC AR6 GWP-100 characterisation; the AR6 values are catalogued in the AR6 GWP-100 data page. This tool performs no weighting of its own. For the full quantification logic underlying the inputs, see the PAS 2060 carbon neutrality methodology.
Versioning and supersession
The page is versioned and dated in its meta header. PAS 2060:2014 is recorded as superseded by ISO 14068-1:2023; the calculator is maintained as the reference for legacy declarations and as the migration counterpart to the ISO 14068-1 tool.
Frequently asked questions
PAS 2060:2014 has been withdrawn and superseded by ISO 14068-1:2023, and BSI has moved carbon-neutrality verification to ISO 14068-1. Existing PAS 2060 declarations remain a record of how a claim was constructed, but new claims seeking verification are assessed against ISO 14068-1. Use this calculator to interpret legacy declarations and to plan the migration.
No. PAS 2060:2014 fixes no numeric minimum reduction. It requires a credible reduction commitment and a documented carbon-management plan; the size of the reduction is judged on the plan’s credibility, not against a fixed threshold. This calculator applies no numeric reduction minimum either.
By balance, yes — retiring credits equal to the residual takes the net position to zero. By the standard, no. PAS 2060 requires reduction before offsetting, so a residual cancelled with no carbon-management plan behind it fails the demonstration even when the arithmetic reaches zero. The two verdicts are scored separately.
The QES is the document that supports a PAS 2060 carbon-neutral claim. It records the subject and boundary, the quantified footprint, the reduction commitment and carbon-management plan, the offsets used, and the declaration type. It is the artefact a third party assesses, which is why documentation is one of the four stages rather than an afterthought.
Achievement attests neutrality for a defined period through full compensation of the residual. Renewal, for a subsequent period, additionally requires evidence of a demonstrated reduction over the prior period. A renewal with zero or absent reduction fails the demonstration even if its balance is again net zero — the commitment at first achievement becomes a track record at renewal.
Use ISO 14068-1:2023 for any new carbon-neutrality claim seeking verification — it is the current international standard and the one BSI now verifies against. Use PAS 2060 only to interpret a legacy declaration or to plan a migration. Running the same inventory through both calculators is the quickest way to see what changes between the two.