With global public debt ratios back near, and in some cases above, post‑war highs, governments and investors are revisiting an old question: could financial repression once again help cut mounting debt? In the decades after the Second World War, many advanced economies used a combination of low or capped interest rates, capital controls and targeted regulation to hold down the cost of government borrowing. Over time, this helped erode the real value of debt and ease fiscal pressures.

This research note examines whether that playbook can be repeated in today’s very different financial environment. We define financial repression broadly as policies that channel savings into government debt at below‑market rates of return. Some classic tools – such as explicit interest‑rate ceilings or direct controls on bank portfolios – are less visible now, but others remain in use. The note highlights how modern forms of repression increasingly operate through subtler mechanisms, including macroprudential rules and regulatory frameworks that create a captive investor base for sovereign bonds.

However, the analysis argues that the conditions which underpinned the success of post‑WW2 repression no longer hold. Then, widespread capital controls and segmented domestic financial systems made it harder for savers to escape low returns, allowing governments to sustain repressive regimes for long periods. Today, by contrast, most advanced economies have open capital accounts, deep cross‑border financial integration and more mobile investors. In such a setting, attempts to reintroduce large‑scale repression risk triggering capital flight, higher risk premia or distortions elsewhere in the financial system.