As of May 1st, Ukraine's international reserves stood at $48.2 billion — down 7.3%, or approximately $3.8 billion, compared to a month earlier. The National Bank stated that outflows exceeded inflows from partners and foreign currency bond placements.

However, there is a detail in the dynamics itself that breaks the simple interpretation of "the NBU supported the hryvnia — reserves melted away."

Fewer interventions — more outflow

In April, the National Bank's net foreign currency sales decreased by 25.1% compared to March. This means the regulator was less active in intervening on the international market to protect the hryvnia. Demand declined — either businesses seasonally reduced their need for foreign currency, or the balance between supply and demand improved.

However, reserves still fell. The answer lies in the debt calendar: April payments on the state's external obligations in foreign currency exceeded the amount that could be attracted from partners and the market. In other words, it was not market interventions that "consumed" the reserves, but servicing of government debt.

What is $48.2 billion in real terms

The NBU notes that the current level of reserves provides 4.9 months of future imports — the IMF standard requires a minimum of three months. In other words, formally there is a buffer.

• Market stability: The NBU confirms sufficient reserves to support the foreign exchange market — and April's reduction in interventions indirectly confirms this.
• Structural deficit: Ukraine chronically sells more foreign currency than it receives from the market. The regulator closes this gap through international aid — in particular, the G7's ERA mechanism, which directs revenues from frozen Russian assets.
• Debt burden is increasing: According to the NBU's baseline scenario, in 2026–2027, external financing volumes will decrease, while payments on restructured debt will increase.

ERA as a buffer

In April 2025, according to NBU data, under the ERA initiative and Ukraine Facility program, over $4.8 billion from the European Union was received into government reserve accounts. It is these flows that prevent reserves from falling more sharply in months with large debt payments.

"This will reduce risks of timely and rhythmic international financing inflows and allow for an increase in international reserves"

— NBU on the role of the ERA mechanism in reserve policy

As long as ERA works — reserves hold up even in a "debt" month. But the mechanism is tied to frozen Russian assets and depends on legal and political decisions by the G7.

What's next

The NBU had forecast a reduction in reserves to $40.5 billion by the end of 2025 — and April's outflow fits this trajectory. If debt payments in May–June remain as large, and ERA tranches are delayed, reserves could fall below the psychological threshold of $45 billion as early as summer.

The real question is not whether $48.2 billion is "sufficient" by IMF standards, but whether the ERA mechanism can withstand another round of geopolitical pressure on the G7 before Ukraine's debt schedule enters its peak in 2026.