2.3 Scottish Central Bank – Powers and Independence

What role would a Scottish Central Bank play?

The core question is institutional and operational: what role would a Scottish Central Bank play in an independent Scotland using sterling as its primary currency? The short answer is clear. An independent Scottish Central Bank would be established from day one. Its core functions would be financial stability and oversight of Scotland's banking system; prudential regulation and bank resolution; operation and oversight of payment systems; acting as banker to the Scottish Government; and holding and managing reserves. While sterling remains the primary currency, it would not set interest rates or control the money supply. Operational independence from government would be legally protected.

Sterlingisation removes independent monetary policy; it does not remove the need for a domestic institution to oversee banks, payments, reserves, and crisis liquidity within the limits of the chosen regime. Without a Scottish Central Bank, Scotland would lack the basic machinery of financial oversight and emergency management. Establishing that institution on Independence Day is therefore essential, even though its interest-rate role remains dormant while sterling is used. The main constraints are capacity—staff, systems and supervisory intensity—the inherent limits of liquidity support under sterlingisation, and the need for transitional cooperation on payment systems where UK infrastructure remains relevant. Independence of the Bank from short-term political pressure is treated as a legal design requirement, not a cultural preference.

The currency choice of sterlingisation, the legal basis for unilateral use, the negotiation red line on sterling continuity, and the supporting arrangements of fiscal rules, deposit protection and reserves all presuppose a capable domestic central bank. Credibility with the banking system, markets, the Scottish Parliament, and the public depends on precision about what the Bank would and would not do. At the same time, the Bank must use sterling and ensure that its operational independence is secured. The 18–24 month working timeline supplies the window within which the Bank’s legal foundation, core senior appointments, and initial operational capacity must be put in place.

Current Position and Legal/Institutional Baseline

Scotland currently has no separate central bank. Monetary policy, note issuance and the core lender-of-last-resort function for the sterling area. The Prudential Regulation Authority, part of the Bank of England, regulates banks prudentially, while the Financial Conduct Authority oversees conduct. Payment systems operate within UK-wide infrastructure. The Scottish Government receives banking services through the existing UK public-finance framework. The baseline is therefore complete integration into UK monetary and regulatory institutions for the functions that a domestic central bank would normally perform.

Independence under the sterlingisation model chosen in this framework ends that integration for domestic purposes. Interest-rate setting and the broader monetary stance remain external. The need for a Scottish institution responsible for financial stability oversight, prudential regulation and resolution of banks operating in Scotland, payment-system continuity, government banking and reserves management does not disappear. International practice in economies that use another state’s currency without a formal union—whether dollarised or otherwise—shows that domestic authorities continue to perform supervisory, payment, and reserves functions even when monetary policy is set elsewhere. The baseline after a lawful Yes vote is therefore the requirement to create a Scottish Central Bank whose mandate matches the constraints of sterlingisation rather than being designed as if Scotland issued its own currency from day one.

Mechanism and Delivery

The mechanism is primary legislation establishing the Scottish Central Bank before or on Independence Day, with a clear statutory mandate, operational independence protections, and accountability arrangements to the Scottish Parliament. The Bank would begin operations immediately in its core functions. Some capabilities—particularly full supervisory intensity and reserves management at scale—would develop further over the first years. Transitional cooperation with the Bank of England and other authorities would be used where necessary to ensure there is no gap in oversight or payment-system continuity.

The core functions would be defined in statute. Financial stability and banking oversight would encompass monitoring systemic risks in the Scottish financial system and working to prevent or mitigate threats to stability, including macro-prudential judgment within the Bank’s mandate and coordination with the fiscal authorities where solvency risk becomes a public-finance issue. Prudential regulation and bank resolution would include setting and enforcing capital, liquidity and risk standards for banks operating in Scotland, and operating a clear resolution regime so that failing institutions can be dealt with in an orderly manner that protects depositors and limits wider damage. High standards from day one help mitigate the lender-of-last-resort constraint. Payment and settlement systems would ensure that the systems through which payments are made and settled continue to operate reliably, including cooperation with UK and international payment infrastructures. Payment continuity is a household and business continuity issue, not only a technical one. The Bank would act as banker to the Scottish Government, holding government accounts, managing government cash flows and providing related treasury services within a clear legal framework that protects the Bank’s operational independence. Reserves management would involve holding and managing Scotland’s foreign exchange and sterling reserves under a clear mandate focused on stability and the ability to support the financial system if required. Within the limits of sterlingisation, the Bank would provide crisis liquidity assistance to solvent banks against good collateral, backed by the Bank’s own resources and the government’s fiscal capacity. This is not equivalent to a full issuer-central-bank lender of last resort; the limits are stated in the following section of this part.

As long as sterling is the primary currency, the Scottish Central Bank would not set policy interest rates, conduct independent open-market operations to control the money supply, or act as a full lender of last resort in the manner of a central bank that issues its own currency. These limitations are inherent in the currency choice. They are managed through complementary arrangements: strict fiscal rules, robust bank capital requirements, a properly funded deposit protection scheme and the accumulation of reserves. Pretending the Bank can deliver full monetary sovereignty under sterlingisation would be false. Defining its role within the constraint is the credible approach.

Law would protect operational independence from government. Key elements would include clear statutory objectives focused on financial stability and the other functions listed above; secure tenure for senior decision-makers; transparency and accountability to the Scottish Parliament through regular reporting and scrutiny; and prohibition on the Bank taking instructions from the government on the use of its operational tools. Independence is essential for credibility with markets, the banking system and the public. A central bank that is seen as an instrument of short-term political pressure cannot perform its stability role effectively. Accountability to Parliament for the mandate and performance is not the same as ministers directing operations on individual decisions. The legal design must keep that distinction sharp.

Staffing would draw on existing expertise within Scotland, recruit specialists and, where appropriate, use secondments or transitional support arrangements. Feasibility depends on prioritisation within the 18–24 month transition window with contingency: legal establishment, core senior appointments, payment-system continuity arrangements and an initial supervisory framework are day-one or early priorities; depth of supervision and reserves scale build over time. Cost is a real transition and ongoing fiscal item—salaries, systems, premises—and sits inside the medium-term fiscal plan. Under-funding the Bank would undermine the sterlingisation regime itself.

Continuity Design

Continuity of financial oversight, payment systems and the capacity to manage liquidity stress is a design requirement of the sterlingisation regime. The Scottish Central Bank supplies the institutional home for those functions from Independence Day. Existing banks operating in Scotland continue under a clear prudential and resolution framework. Payment systems continue to function, supported by transitional cooperation or domestic and correspondent arrangements where needed. The Bank continues to manage government cash as banker to the Scottish Government. Reserves are held and managed under a clear mandate. Crisis liquidity support, within the limits of the regime, is available against good collateral.

The continuity of the financial system in which contracts, mortgages, savings and pensions sit is thereby protected. Gaps in supervision, payment continuity, or resolution powers at the moment of independence are unacceptable. Mitigation is early legislation, dual-running or contractual continuity on payments where needed, clear allocation of prudential responsibility for banks operating in Scotland, and public communication that a Scottish authority is in place. Continuity of deposit protection and high capital standards reduce the probability that resolution powers are tested early. The Bank is not a substitute for fiscal discipline or for deposit protection; it is the operational centre of the financial-stability framework that makes sterlingisation a managed regime rather than a hope.

Constraints and Trade-offs

Legal constraints

The Bank’s legal existence and domestic mandate do not require UK agreement. Primary Scottish legislation establishes the institution, its objectives, its independence protections and its accountability to the Scottish Parliament. Payment-system interoperability, information-sharing and any transitional supervisory cooperation benefit from UK engagement but are not legal preconditions for the Bank’s existence or core domestic powers. The legal constraint is the need for precise statutory drafting that matches the mandate to the constraints of sterlingisation, protects operational independence, and provides clear resolution and liquidity powers within those constraints. Constitutional continuity of law and institutions supplies the platform for the Bank’s statute.

Fiscal constraints

Cost is a real transition and ongoing fiscal item: salaries, systems, premises and the build-up of operational capacity. It sits inside the medium-term fiscal plan and the fiscal rules. Under-funding the Bank would undermine the sterlingisation regime itself and is therefore treated as a policy failure rather than an acceptable economic outcome. The fiscal constraint is the need to prioritise core functions and senior capacity within the opening fiscal position while recognising that the Bank is an essential piece of the stability infrastructure, not an optional administrative overhead. Honesty about the cost is part of credibility.

Operational constraints

Operational delivery requires legal establishment, core senior appointments, payment-system continuity arrangements and an initial supervisory framework within the transition timeline. Full supervisory intensity and reserves management at scale develop over the early years. Staffing draws on existing expertise, recruitment and transitional arrangements. The operational constraint is capacity—skilled personnel, systems and the ability to exercise oversight over a banking system that includes institutions with UK-wide and international operations. The design response is to prioritise day-one essentials, pursue transitional cooperation where available, and follow a realistic build trajectory for depth of supervision. The mandate matches sterlingisation; it does not assume powers the currency choice does not support.

Political constraints

Political pressure may arise to treat the Bank as an instrument of short-term policy, to expand its mandate rhetorically beyond what sterlingisation allows, or to under-resource it amid competing fiscal demands. The political constraint is the need to protect operational independence and a mandate matched to reality against both politicisation and under-funding. The response is legal design that secures tenure, statutory objectives and prohibition on ministerial instruction on operational tools, combined with transparency and accountability to Parliament for the mandate and performance. Credibility with markets and the banking system depends on that protection being real and visible.

Time constraints

The Bank must be established in law and begin core operations on or immediately after Independence Day. Legal drafting, senior appointments and payment-continuity arrangements therefore sit inside the 18–24 month working timeline. Depth of supervision and reserves scale build over subsequent years. The time constraint is real for the day-one package and sequential for the fuller capability. Competence in the core functions and the legal independence protections takes priority over artificial claims of full readiness in every dimension on day one. A phased build that delivers the essentials without gaps is preferable to a delayed institution or an over-promised mandate.

Consistency with the Wider Framework

The Scottish Central Bank is the institutional core of the sterlingisation regime. It links the legal basis for unilateral sterling use to lender-of-last-resort limits, deposit protection, reserves, crisis contingency, and the conditional path to a future Scottish currency. It supports fiscal credibility by providing an independent institutional counterpart to the fiscal rules and the independent fiscal institution. It does not conflict with contract or pension continuity; it helps protect the financial system in which those claims sit. Constitutional continuity of law and institutions supplies the legal platform for the Bank’s statute and powers.

The Bank’s mandate is deliberately matched to the currency choice. It does not pretend to set interest rates or to act as a full issuer-central-bank lender of last resort while sterling is used. Those limitations are inherent and are managed through the complementary arrangements set out in the surrounding sections. The same continuity-first logic that applies to the unit of account, to law, to Parliament and to rights applies to the institutional machinery of financial stability. The Bank is established early so that oversight, payments and reserves management have a clear Scottish home from the first day of independence. Later expansion of powers, if a Scottish currency is introduced under the published tests, would be a subsequent legislative and institutional step, not a day-one assumption.

Hardest Critiques and Direct Responses

Feasibility

The hardest practical critique is that a small new central bank cannot oversee a banking system still dominated by institutions with UK-wide operations, or that the Bank's “independence” is meaningful when monetary policy sits in London. The response is direct. Prudential regulation, resolution, payments and reserves are distinct from interest-rate setting. Many jurisdictions supervise large internationally linked banks domestically. Operational independence means freedom from domestic political instruction on supervisory and liquidity tools, not control of sterling policy rates. Feasibility depends on legal establishment, prioritising core functions, recruitment, and transitional cooperation where available. Supervisory depth builds over time; the absence of a domestic institution on day one is not an acceptable alternative. Credibility is earned by legal design, appointments, transparency and performance—not by the size of the balance sheet alone.

Cost and fiscal burden

Critics will argue that the cost of salaries, systems and premises is an unnecessary burden on top of the opening fiscal position. The response is that the cost is real, sits inside the medium-term fiscal plan, and is the price of having the institutional machinery of financial stability under sterlingisation. Under-funding the Bank would undermine the currency regime itself. The alternative of no domestic central bank would leave oversight, payments and reserves without a clear Scottish institutional home and would increase rather than reduce systemic risk. The framework treats the Bank as essential infrastructure, not optional overhead.

Dependence on agreement

The Bank’s legal existence and domestic mandate do not require UK agreement. Payment-system interoperability, information-sharing and transitional supervisory cooperation benefit from UK engagement. If that engagement is limited, Scotland would rely more heavily on domestic systems, correspondent arrangements and its own supervisory resources. The stability mandate still stands; the operational friction increases. Adversarial negotiation on other files does not remove the need to stand up the Bank on schedule. The response is that dependence is limited to operational facilitation, not to the institution's existence or core powers.

Transition risk

Gaps in supervision, payment continuity or resolution powers at the moment of independence are the principal risks. Mitigation is early legislation, dual-running or contractual continuity on payments where needed, clear allocation of prudential responsibility for banks operating in Scotland, and public communication that a Scottish authority is in place. Continuity of deposit protection and high capital standards reduce the probability that resolution powers are tested early. The framework does not claim that transition risk is zero; it claims that the risk is minimised by establishing the Bank as a day-one institution with a mandate matched to the currency regime and by prioritising the functions that prevent gaps in oversight and payments.

Alternatives (status quo and previous proposals)

No domestic central bank under sterlingisation would leave oversight, payments and reserves without a clear Scottish institutional home and is rejected. A central bank designed as if Scotland issued its own currency from day one would misstate the mandate and create false expectations about interest rates and last-resort lending; that alternative is rejected in favour of a mandate matched to sterlingisation, with a later path to expanded powers if a Scottish currency is introduced under the published tests. Reliance on the Bank of England for all functions is inconsistent with independence and with the UK’s refusal of formal currency union; it is not available as a full substitute for domestic capacity. The status quo of integrated UK monetary and regulatory institutions ends with independence under the chosen currency model; the framework replaces domestic elements with a Scottish Central Bank whose role is defined by that model's constraints.

Political and public credibility

The claim most likely to be called unrealistic is that operational independence is meaningful when interest rates are set in London, or that a new institution can quickly match the supervisory reach of existing UK authorities. The precise answer is that independence concerns freedom from domestic political instruction over the tools the Bank controls—supervision, resolution, payments, reserves, and limited liquidity support—and that many jurisdictions successfully supervise internationally linked banks under domestic authorities. Credibility is earned by statutory design that protects tenure and objectives, by the quality of appointments, by transparency to Parliament, and by performance over time. A strategy that under-resourced the Bank or that allowed ministerial direction on operational decisions would forfeit that credibility. A strategy that promised monetary powers the currency choice does not support would do the same. The framework states the mandate, the limits and the independence protections with equal clarity.

Position Summarised

A Scottish Central Bank is required from day one even under sterlingisation. Its role is financial stability, bank regulation and resolution, payment systems, government banking and reserves management. It does not set interest rates or control the money supply while sterling is used. Legal independence from government is essential to its credibility. The institution provides the necessary domestic machinery of financial oversight and crisis management within the constraints of the chosen currency regime. Continuity of sterling is paired with the early creation of a capable, independent Scottish Central Bank. Capacity builds over the early years; core functions and legal independence are not deferred. The transition timeline prioritises legal establishment, senior appointments, payment continuity, and an initial supervisory framework. The cost is real and is met within the medium-term fiscal plan. Transitional cooperation is desirable for operational smoothness; the Bank’s existence and domestic mandate do not depend on it.

Conclusion

Sterlingisation without a domestic central bank would be incomplete and fragile. This framework therefore establishes an independent Scottish Central Bank from day one, with a mandate matched to financial stability, regulation, payments, government banking and reserves—and without a pretence of interest-rate control while sterling is used. The statute builds in legal independence, clear objectives, and accountability to Parliament. Capacity and cost are real constraints, met through prioritisation, recruitment, and transitional cooperation where available. The Bank is not a substitute for fiscal discipline or for deposit protection. It is the operational centre of the financial-stability framework that makes sterlingisation a managed regime rather than a hope. Later sections specify lender-of-last-resort limits, deposit protection and reserves; all of them assume this institution exists and is independent. This prospectus assigns that role to the Scottish Central Bank. Every subsequent monetary and fiscal arrangement in this part presupposes a capable, independent domestic authority responsible for the stability functions that remain necessary under external monetary policy. This section establishes that authority as a day-one institutional requirement.

Series Footer

This analysis forms part of People’s Future Scotland: The Independence Debate, a series examining the practical, legal and institutional questions that would arise in any move to independence. Each section is designed to withstand scrutiny by setting out mechanisms, constraints and continuity requirements with equal clarity. The series proceeds from the premise that a decision of this magnitude requires a process and a prospectus that both supporters and opponents can recognise as serious.