Service
Medium Term Financial Strategy (MTFS) Consultancy
A structured multi-year financial planning framework connecting current decisions to future consequences.
Annual budgets tell a local authority where it stands today. A Medium Term Financial Strategy tells it where it is heading. As funding pressures, demand growth and inflation continue to reshape public sector finances, authorities need more than a one-year view — they need a structured, multi-year framework that connects current decisions to future consequences. A robust MTFS allows finance teams and elected members to identify emerging budget gaps early, test assumptions before they are relied upon, and align spending with strategic priorities. Done well, it becomes the evidence base for the authority's most difficult financial choices.
What Is a Medium Term Financial Strategy?
A Medium Term Financial Strategy (MTFS) is a structured financial planning framework that sets out an authority's expected income, expenditure and funding position over a multi-year horizon — typically three to five years. Its purpose is to translate strategic priorities into a realistic, sustainable financial plan.
Unlike an annual budget, which fixes spending and funding decisions for a single financial year, an MTFS looks further forward. It sets out the assumptions behind future income and cost pressures, quantifies the scale of any projected budget gap, and identifies the choices available to close it — whether through savings, service redesign, income generation or reserves.
An MTFS typically informs and is used by:
Section 151 Officers and Chief Finance Officers, to evidence financial sustainability
Chief Executives and senior leadership teams, to align resources with corporate priorities
Cabinet Members and elected members, to understand the financial implications of policy choices
Finance and transformation teams, to plan savings programmes and service change
External auditors and regulators, as evidence of sound financial management
Put simply: annual budgets manage the present; an MTFS manages the trajectory. It is the mechanism by which today's financial decisions are tested against tomorrow's financial position.
Why Local Authorities Need a Robust MTFS
Financial visibility A well-constructed MTFS shows how current decisions — spending commitments, savings targets, capital investment — play out over subsequent years, rather than being assessed in isolation.
Early identification of budget gaps Emerging pressures are easier to manage when they are identified two or three years in advance rather than discovered during the next budget-setting round.
Scenario planning Funding settlements, inflation, demand growth and policy change all carry uncertainty. A robust MTFS tests multiple scenarios rather than relying on a single, static forecast.
Strategic resource allocation An MTFS connects financial planning to the authority's stated priorities, helping ensure that available resources are directed towards what matters most, rather than being allocated by historical default.
Financial resilience Understanding financial capacity — including reserves, borrowing headroom and risk exposure — allows an authority to plan for uncertainty rather than react to it.
Better decision-making Senior leaders and elected members are better placed to make difficult financial choices when those choices are supported by clear, evidenced, multi-year analysis rather than short-term assumption.
What Our MTFS Consultancy Covers
Current Financial Position Review
A structured assessment of the authority's existing financial position, planning assumptions, cost pressures and current MTFS framework, to establish a clear starting point.
Multi-Year Financial Modelling
Development of financial models projecting how income, expenditure and other key variables are likely to evolve across the planning period.
Budget Gap Analysis
Identification and quantification of projected gaps between anticipated funding and expenditure, and the factors driving them.
MTFS Development
Support to build, or substantially strengthen, a coherent and evidence-based Medium Term Financial Strategy that withstands scrutiny.
Scenario and Sensitivity Analysis
Testing how changes to funding assumptions, demand pressures or policy decisions affect the authority's financial position, to stress-test the strategy before it is relied upon.
Financial Forecasting
Development of realistic, forward-looking income and expenditure projections based on the authority's own data and reasonable planning assumptions.
Risk and Assumption Review
A clear-eyed review of the assumptions underpinning the strategy, and the financial risks that could materially affect it.
Strategic Financial Advice
Senior-level advisory support to help leadership teams translate financial analysis into practical, deliverable decisions.
Our Approach
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Current
Position Review We start by understanding the authority's existing financial position, any current MTFS, and the key assumptions and pressures already in play.
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Financial
Forecasting We develop evidence-based income and expenditure projections, drawing on the authority's own financial data and clearly stated assumptions.
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MTFS
Build We translate the analysis into a coherent, multi-year financial strategy that is structured to withstand member and audit scrutiny.
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Scenario
Testing We stress-test the strategy against alternative funding, demand and policy scenarios, so leadership teams understand sensitivity and risk before committing.
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Ongoing
Support We provide continued advice and review as financial conditions, funding settlements and assumptions change through the planning period.
Why Nonsuch Finance for MTFS?
Nonsuch Finance was founded by a former Chief Finance Officer at the Greater London Authority, bringing senior public sector financial leadership experience directly into the advisory relationship. That background shapes how we work: we approach MTFS development the way a CFO would — grounded in realistic assumptions, honest about risk, and focused on decisions that leadership teams can actually act on.
As a specialist consultancy rather than a large multi-service firm, engagement is senior-level throughout. There is no handover to a junior level team once a proposal is signed. Financial models are tailored to the authority's own structure and data rather than adapted from a generic template, and advice is delivered collaboratively, working alongside existing finance teams rather than around them.
- Strategic enough for senior leadership. Practical enough to support implementation.
Who This Service Is For
- Local authorities and councils at any stage of the MTFS cycle
- Public sector organisations developing multi-year financial plans
- Finance leadership teams building capacity or capability in-house
- Authorities reviewing or refreshing an existing MTFS
- Organisations facing significant medium-term budget pressures
- Teams needing stronger forecasting, modelling or scenario planning
- Leadership teams seeking an independent, senior-level financial perspective
- Organisations working with Nonsuch Finance on MTFS development can expect:
- Clearer visibility of their financial position across the medium-term planning horizon
- A stronger understanding of emerging budget pressures before they become urgent
- More robust, defensible financial assumptions
- Improved scenario and sensitivity planning capability
- Earlier identification of financial risks
- Closer alignment between financial strategy and organisational priorities
- Greater confidence in the sustainability of medium-term budget plans
Key benefits
Clearer Financial Visibility
See how today's decisions affect the authority's financial position over the medium term, not just the next financial year.
Stronger Forecasting
Build more robust, evidence-based multi-year income and expenditure projections.
Earlier Risk Identification
Identify emerging financial pressures and risks while there is still time to respond.
Evidence-Based Decisions
Give senior leaders and elected members a stronger financial basis for difficult strategic choices.
Realistic Budget Planning
Connect financial forecasts to genuinely achievable planning assumptions, not aspirational ones.
Greater Financial Resilience
Strengthen the authority's capacity to plan for funding uncertainty and demand volatility.
Scenario-Tested Strategy
Understand how the MTFS holds up under different funding, inflation and demand scenarios.
Senior-Level Advisory Access
Work directly with experienced former public sector finance leadership, not a delegated project team.
Frequently asked questions
What is a Medium Term Financial Strategy (MTFS)?
A Medium Term Financial Strategy is a multi-year financial planning framework, typically covering three to five years, that sets out a local authority's expected income, expenditure and funding position. It goes beyond the annual budget by identifying future pressures, quantifying potential budget gaps, and setting out the assumptions and choices that underpin financial sustainability.
How often should an MTFS be updated?
Most local authorities review and refresh their MTFS annually, alongside the budget-setting cycle, with more frequent monitoring where funding or demand conditions are volatile. Significant changes — such as a new funding settlement, major policy change or materially different demand data — should trigger an interim review rather than waiting for the next annual cycle.
What should an MTFS include?
A robust MTFS should include multi-year income and expenditure forecasts, clearly stated planning assumptions, identified budget gaps and the options for closing them, capital and treasury implications, key financial risks, and a clear link to the authority's strategic priorities.
How does an MTFS support annual budget setting?
The MTFS provides the multi-year context within which each annual budget is set, ensuring that a single year's decisions are consistent with the authority's longer-term financial trajectory rather than being made in isolation.
How can financial modelling improve an MTFS?
Financial modelling allows assumptions to be tested and forecasts to be built on structured, transparent logic rather than static estimates. It also enables scenario and sensitivity analysis, showing how the strategy responds to changes in funding, inflation or demand.
What is budget gap analysis?
Budget gap analysis identifies the projected difference between an authority's expected funding and its expected expenditure over the planning period, and examines the assumptions driving that gap so that realistic options for addressing it can be developed.
Can Nonsuch Finance help review an existing MTFS?
Yes. Many engagements begin with a structured review of an authority's existing MTFS, assessing the robustness of its assumptions, forecasts and risk analysis before recommending where it can be strengthened.
Do you work with local authorities and public sector organisations?
Yes. Nonsuch Finance works specifically with local authorities, councils and wider public sector organisations, drawing on senior public sector finance leadership experience.
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