Philippine Debt Hits P19.66 Trillion as Weak Peso Lifts September Total

Peso depreciation drives September debt increase

The Philippine national government's debt reached a record P19.66 trillion at the end of September 2026, with a weaker peso accounting for much of the month's increase by raising the local currency value of obligations denominated in foreign currencies.

Bureau of the Treasury figures put the debt stock 0.27% above the P19.61 trillion recorded at the end of August. Since December 2025, the total had risen by P1.95 trillion, or 11.03%, from P17.71 trillion.

The sharpest effect of the currency movement appeared in external debt. Peso depreciation against the US dollar added P40.12 billion to its recorded value during September, compared with P9.27 billion contributed by net external loan availments. Movements in other currencies partly offset those increases.

September's figures tell a different story from the cumulative increase during the first nine months of 2026. The weaker peso was the main driver of the monthly rise in external debt, while net borrowing contributed the larger share of its increase since December.

That difference matters for understanding why the total climbed. Government debt can increase when the state borrows more money. Its value in pesos can also increase when the exchange rate changes, even if the amount owed in the original foreign currency stays the same.

How a weaker peso increases the recorded debt

The Treasury reports the national government's total debt in pesos, including obligations payable in foreign currencies. To put those obligations into a single total, it converts their value into pesos using exchange rates.

A weaker peso means more pesos are needed to equal the same amount of US dollars. A dollar obligation therefore becomes larger when expressed in pesos, even without another loan being taken out. This change is called a valuation effect.

For the government, currency movements can also affect the pesos needed to meet future payments on foreign currency obligations. The amount required when a payment falls due depends on the exchange rate at that time.

September's external debt figures show this process in detail. Peso depreciation against the dollar added P40.12 billion, while favorable movements in other currencies against the dollar reduced the recorded value by P4.70 billion. Taken together, those currency effects increased external debt by P35.42 billion.

Net external loan availments added another P9.27 billion. Combining the currency effects and net borrowing produces the P44.69 billion increase reported by the Treasury for the month.

Domestic debt still accounts for most obligations

Domestic debt stood at P13.25 trillion at the end of September, accounting for 67.39% of the total. External debt amounted to P6.41 trillion, or 32.61%. In simple terms, roughly two thirds of the national government's debt was domestic and one third was external.

The domestic component rose by P8.78 billion, or 0.07%, from August. The Treasury attributed most of that increase to P7.66 billion in net government securities issuance, with peso depreciation against the US dollar also contributing.

Government securities are instruments through which the state borrows from investors, such as Treasury bills and bonds. Net issuance measures new securities issued after allowing for securities repaid during the period.

Domestic debt had increased by P1.13 trillion, or 9.34%, since the end of December 2025, when it stood at P12.12 trillion. Its much larger starting size meant it contributed more pesos to the total increase than external debt did, even though external debt grew faster in percentage terms.

The figures also show why a modest monthly percentage change can still involve substantial sums. September's 0.07% rise in domestic debt amounted to P8.78 billion because it was measured against a debt stock already exceeding P13 trillion.

External debt grew faster during the year

External debt increased by 0.70%, or P44.69 billion, during September, reaching P6.41 trillion from P6.37 trillion in August. Its monthly growth rate was ten times the 0.07% rate recorded for domestic debt.

Since December 2025, external debt had risen by P820.43 billion, or 14.67%, from P5.59 trillion. That percentage increase exceeded the 9.34% growth in domestic debt over the same period.

The Treasury attributed P462.85 billion of the cumulative external debt increase to net borrowing and P357.58 billion to exchange rate valuation effects. Those amounts add up to the P820.43 billion increase.

Calculated from those figures, net borrowing accounted for about 56.4% of the external debt increase during the first nine months, while currency movements accounted for about 43.6%. Borrowing therefore contributed P105.27 billion more than exchange rate changes over that period.

September had a different balance. After the offset from other currencies, exchange rate effects contributed P35.42 billion, or about 79.3%, of the month's P44.69 billion external debt increase. Net external borrowing supplied the remaining 20.7%.

The monthly and cumulative figures answer different questions: currency movements explain most of September's external debt increase, while additional borrowing explains the larger share of the increase since the start of 2026.

Three dates show how the debt accumulated

The national government's debt rose substantially between the end of 2025 and September 2026, although the latest monthly increase was much smaller than the cumulative change. The main reference points are:

• End of December 2025: Total debt stood at P17.71 trillion, comprising P12.12 trillion in domestic debt and P5.59 trillion in external debt.
• End of August 2026: Total debt stood at P19.61 trillion, with external debt at P6.37 trillion.
• End of September 2026: Total debt reached P19.66 trillion, including P13.25 trillion in domestic debt and P6.41 trillion in external debt.

The September increase was 0.27%, compared with an 11.03% rise across the first nine months. The latest movement therefore added to a much larger accumulation that had already taken place earlier in the year.

The Treasury attributed that cumulative growth to financing activities and exchange rate valuation effects. Those two forces can operate together: the government can borrow to meet its financing needs while currency changes alter the peso value of debt already outstanding.

Spending plans leave a substantial financing gap

The government's 2026 fiscal program provides context for continued borrowing. Planned revenue is P4.81 trillion, against spending of P6.793 trillion. Subtracting revenue from spending gives a gap of P1.983 trillion.

Revenue is the money the government expects to collect, while spending covers the money it plans to pay out. When planned expenditure exceeds expected collections, the difference is a budget deficit, with borrowing expected to cover much of the shortfall.

The proposed 2027 spending program is P7.2 trillion, against planned revenue of P5.21 trillion. Those figures imply a gap of P1.99 trillion, about P7 billion wider than the gap in the 2026 program.

Both sides of the proposed budget would grow. Spending would rise by P407 billion, or about 6.0%, while revenue would increase by P400 billion, or about 8.3%. Revenue would grow faster in percentage terms because it starts from a smaller base.

The gap would equal about 29.2% of planned spending in 2026 and 27.6% in the proposed 2027 program. Put simply, projected collections would cover a larger share of spending in 2027, while leaving a shortfall of almost P2 trillion.

The budget figures are plans, and the 2027 spending program remains a proposal. Actual collections, expenditure and financing needs will determine how much borrowing is required.

What the figures mean for public finances

The P19.66 trillion debt stock is the accumulated amount outstanding at a particular date. The P1.983 trillion gap in the 2026 fiscal program measures the difference between planned revenue and spending during a year. Debt is a running balance; the deficit is a flow measured over time.

Borrowing requirements can also include money needed to repay debt as it matures. For that reason, the annual budget gap alone does not give the full amount of new debt the government may issue.

The domestic and external figures point to two pressures on the public accounts. Financing needs add obligations, while exchange rate movements can change their value in pesos. September's results show how quickly the second pressure can affect the reported total.

For public services and taxpayers, the practical connection is through the budget. Debt payments must be funded alongside other spending. When foreign currency payments require more pesos, the government needs more local currency to meet those obligations.

The Treasury figures do not provide a forecast for the peso or a timetable for reversing the latest valuation increase. The next changes in the debt stock will depend on borrowing, repayments and exchange rates, while the proposed 2027 budget indicates that a substantial financing gap remains in the government's plans.

Key Points

• National government debt reached a record P19.66 trillion at the end of September 2026, up 0.27% from August.
• Debt increased by P1.95 trillion, or 11.03%, from the end of December 2025.
• Domestic debt accounted for 67.39% of the total, while external debt represented 32.61%.
• Peso depreciation against the dollar added P40.12 billion to external debt in September, partly offset by P4.70 billion in favorable movements in other currencies.
• Net borrowing accounted for about 56.4% of the external debt increase during the first nine months, exceeding the contribution from currency valuation changes.
• The 2026 fiscal program implies a P1.983 trillion revenue shortfall, compared with P1.99 trillion under the proposed 2027 program.