Hryvnia Moves to a Managed Float: What Is Happening to Ukraine's FX Reserves

In early April 2026, Ukraine's international foreign exchange reserves fell 5% to $54.8 billion. The cause: large-scale currency interventions — the National Bank of Ukraine is selling dollars from its reserves to hold the official exchange rate near UAH 43.77 per dollar. At the same time, the International Monetary Fund is increasing pressure on Ukraine to allow faster exchange-rate flexibility. The population is responding in its own way: in recent weeks Ukrainians bought $1.9 billion in foreign currency from banks and exchange offices while selling only $1.1 billion.

Behind these numbers lies a deeper shift: Ukraine has officially moved from a de-facto fixed exchange rate to a managed float regime, operating within a corridor of UAH 42.75–47.25 per dollar. Understanding what this means in practice — and what risks it creates — requires a look at how currency regimes actually work.

What a Managed Float Is and How It Differs from a Fixed Rate

There are three fundamental models for how a central bank can manage an exchange rate.

A fixed rate means the regulator announces a specific exchange rate and commits to maintaining it through interventions. The advantage is predictability and anchored inflation expectations. The disadvantage is that the central bank must continuously buy or sell currency to hold the peg, even when market demand points in a different direction. If reserves run dry, the rate can collapse suddenly and disorderly.

A free float means the exchange rate is set by the market, with the central bank intervening minimally or not at all. The rate can move every day, reflecting changes in supply and demand. This is the standard approach for most advanced economies.

A managed float sits between the two. The central bank allows the rate to move within a defined range — a corridor — but intervenes when the rate approaches or breaches the boundaries. The rate is flexible, but not arbitrary.

Prior to March 2022, Ukraine effectively maintained a dollar peg. When martial law was declared, the NBU formally fixed the rate — first at UAH 29.25, then at UAH 36.57 per dollar. This stabilised expectations and stopped panic at the time, but it gradually accumulated imbalances: the official rate increasingly diverged from what market demand would imply.

The transition to a managed float with a corridor of UAH 42.75–47.25 is an acknowledgement that a fully fixed rate is not sustainable during a prolonged conflict and amid volatile external conditions. The NBU now allows the rate to move within the corridor while retaining the right to intervene if it breaks through the boundaries.

Why Reserves Matter

Foreign exchange reserves are the stock of foreign currency (primarily dollars and euros) and gold held on the central bank's balance sheet. They serve as the buffer between external pressure and exchange-rate stability.

When demand for dollars rises — because the population is buying foreign currency, or importers are paying for goods — the NBU can satisfy that demand from its reserves rather than allowing the rate to spike. But every such intervention reduces reserves.

The key metric is reserve adequacy. The IMF and central banks around the world typically assess reserves against several benchmarks:

• 3–6 months of imports — reserves should be sufficient to cover at least this horizon without any inflows
• External debt service — reserves should be enough to cover scheduled payments in the current and following year
• The IMF ARA metric — a composite measure that accounts for the size of the economy, its openness, and capital account characteristics

At $54.8 billion, Ukraine formally maintains a significant cushion. But a 5% decline over a short period signals that reserve spending on interventions is real and sustained. If the trend continues, there is a risk of breaching the conditionality of the IMF programme, which requires reserves to be maintained at an adequate level.

Why the IMF Wants a Weaker Hryvnia

The IMF, under its agreed Extended Fund Facility programme, is strongly urging Ukraine to accelerate the transition toward greater exchange-rate flexibility — in practical terms, to allow faster hryvnia depreciation.

The fund's reasoning has several strands.

Competitiveness. If the hryvnia is held artificially stronger than warranted by Ukraine's price level relative to its trading partners, Ukrainian goods become more expensive for foreign buyers. This reduces export earnings. In an environment where Ukraine needs every dollar of foreign revenue, this matters.

Avoiding imbalance build-up. A de-facto fixed rate often means the true market price of the currency is higher. If an adjustment is inevitable anyway, it is far better for it to happen gradually than in a sudden, disorderly jump.

Preserving reserves. Every NBU intervention is a drawdown of reserves. The IMF wants reserves to be conserved as a genuine safety buffer rather than spent on sustaining an exchange rate that the market is pushing against.

The NBU agrees with the logic in principle but is cautious about the pace. The reason is straightforward: faster hryvnia weakening would accelerate imported inflation — because most consumer goods in Ukraine are directly or indirectly linked to imported components or to energy priced in dollars. A more expensive dollar feeds through quickly into shelf prices.

What Devaluation Expectations Mean

The fact that Ukrainians bought $1.9 billion while selling only $1.1 billion is a classic indicator of elevated devaluation expectations.

When people expect the hryvnia to weaken, they try to convert their hryvnia savings into dollars before the dollar becomes more expensive. This dollar demand itself puts pressure on the exchange rate, forcing the NBU to sell more reserves to stabilise it.

This is the mechanism of a self-fulfilling dynamic: the more people believe in depreciation, the more they buy dollars; the more the NBU spends reserves; the more grounds there appear to be for believing in future depreciation.

There are two main tools for breaking this dynamic. The first is raising interest rates, making it more attractive to hold hryvnia. The second is providing credible signals about reserve adequacy and policy commitment. The NBU is currently using both levers simultaneously.

What This Means for Hryvnia Savers and Dollar Deposit Holders

The transition to a managed float represents a meaningful shift in the risk balance between hryvnia and foreign-currency savings.

If you hold hryvnia deposits or government bonds (OVDPs). Hryvnia instruments offer significantly higher nominal returns — deposits at 14–18%, OVDPs up to 25.5% per annum. But that yield is meant to compensate for exchange-rate risk. If the hryvnia weakens by, say, 10% over the year, the real dollar-equivalent return on your hryvnia deposit falls sharply and could turn negative.

The key question is how fast the hryvnia actually depreciates. With the corridor set at UAH 42.75–47.25 per dollar, the maximum permitted weakening from the lower to the upper bound is roughly 10.5%. If the NBU holds the corridor, aggregate risk is bounded. If the corridor shifts or widens, risk increases.

If you hold dollar deposits. A weakening hryvnia automatically increases the hryvnia-equivalent value of your dollar balance. However, dollar deposit rates in Ukrainian banks are significantly lower — typically 1–4% per annum. You gain on the exchange rate but give up yield.

If you buy imported goods — cars, electronics, pharmaceuticals, fuel. Any weakening of the hryvnia passes directly into higher hryvnia prices for imported goods and services. This is the imported inflation that the NBU is trying to slow.

Practical Takeaway

The move to a managed float is not a crisis and not a surprise. It is a logical step for an economy exiting a rigid peg in a more complex and volatile external environment.

For savers in Ukraine today, three things are worth keeping in mind.

First, exchange-rate risk is now explicit. The corridor defines the boundaries, but they can shift. Hryvnia savings carry real depreciation risk — that risk is built into the higher yields these instruments offer.

Second, diversification remains a sensible approach. Holding part of your savings in hryvnia (earning higher yields) and part in foreign currency (as a hedge against depreciation) is rational risk management, not speculation.

Third, reserve levels are the key indicator to watch. As long as reserves remain adequate, the NBU retains the capacity to defend the corridor. Monitoring the monthly reserve data published by the NBU is at least as important as tracking deposit rates.

The next key moment: the April IMF programme review, which will determine both the future trajectory of the exchange rate and the level of external financing.