Delivering better outcomes for citizens depends on making informed, evidence-based decisions about where and how public money is invested. Across government, the HM Treasury Green Book and Teal Book set the standards for doing exactly that, ensuring that investment decisions, programme delivery, and benefits management are all grounded in robust evidence and clear public value.
At Verto, we help public sector organisations put those principles into practice. Our cloud platform supports every stage of the investment and delivery lifecycle, aligning naturally with the Green and Teal Books to create transparency, accountability, and impact.
The Green Book provides the framework for developing business cases, appraising options, and ensuring value for money. It underpins the Five Case Model, guiding public bodies through the strategic, economic, commercial, financial, and management dimensions of any investment proposal.
The Teal Book, published in 2024, complements this guidance. It focuses on the delivery phase – how organisations turn approved business cases into successful programmes and projects that realise intended benefits. In essence:
Together, they form a complete lifecycle for public investment, from appraisal and approval through to delivery, benefits and learning.
The Green Book emphasises consistent, evidence-based appraisal. Verto provides the digital environment to make that happen. Within a single, secure platform, teams can develop, approve, and manage business cases using the same principles that underpin the Five Case Model.
| Green Book Principle | How Verto Supports It |
| Strategic Case – alignment with strategic objectives | Link every business case to organisational priorities, outcomes, and KPIs within Verto’s portfolio view. |
| Economic Case – options appraisal and value for money | Capture and compare options, model benefits, and track value realisation across programmes. |
| Commercial Case – procurement and partnerships | Centralise supplier information, contracts, and risks in one auditable workspace. |
| Financial Case – affordability and funding | Integrate budget tracking, forecasts, and financial approvals directly within programme dashboards. |
| Management Case – deliverability and governance | Embed assurance workflows, risk registers, and reporting templates aligned with Treasury standards. |
By enabling consistent appraisal across all initiatives, Verto ensures that organisations can demonstrate clear alignment with Green Book standards, while maintaining flexibility to meet local governance needs.
Where the Green Book helps define what to do, the Teal Book focuses on how to deliver it successfully. Verto operationalises those delivery principles, providing live oversight from day one through to benefits realisation.
Key features that align with Teal Book guidance include:
Verto provides the visibility and assurance that SROs, programme directors, and delivery teams need to deliver successfully within the Teal Book framework and to evidence that success clearly to senior leadership and funding bodies.
Public investment doesn’t stop at approval. The real challenge, and opportunity, lies in translating approved business cases into tangible results. The Green and Teal Books together describe a continuous lifecycle:
Verto acts as the digital bridge across this lifecycle. It connects strategic planning, business case development, programme management, and benefits realisation in one integrated system.
This means decision-makers can:
By embedding Green and Teal Book principles into daily delivery practice, Verto helps organisations close the gap between strategy and execution, turning theory into action and policy into performance.
Across central government, local authorities, and NHS organisations, Verto is already supporting Green and Teal Book-aligned transformation.
In every case, the outcome is the same: greater clarity, improved accountability, and better delivery of public value.
As government and public sector organisations strive for greater transparency, performance, and value for money, the alignment between the Green and Teal Books is becoming essential.
Verto provides the platform to make that alignment real, bringing together strategy, investment appraisal, delivery, and benefits management in one place.