Global Debt Tops $365 Trillion in First Half as Emerging Markets Lead Increase

Key Facts

Global debt exceeded $365 trillion at the end of the first half of 2026, a record, according to figures from the Institute of International Finance. The total increased by more than $10 trillion over the six months, with emerging markets accounting for most of the rise. The measure covers borrowing by governments, households, financial institutions and nonfinancial companies, so it is not a tally of sovereign debt alone. It is an outstanding stock at period-end, rather than the amount the world borrowed during that half-year. For markets, the question is where those obligations sit and how exposed borrowers are to refinancing costs.

Emerging-market debt increased by $6.5 trillion in the first half to more than $110 trillion, with China a major contributor. That places most of the global increase among borrowers whose funding conditions and credit risks vary by country. It does not mean the entire addition financed new government deficits, because the measure includes several borrowing sectors. A change in debt outstanding must also be distinguished from interest payments: one measures principal owed, while the other measures the cost of carrying it. Those distinctions explain the record without treating it as a uniform verdict on every country's creditworthiness.

Debt pressure reaches sovereign bonds as older borrowing matures and a government needs to replace it with new funding. If investors demand a higher yield on the replacement issue, the interest bill rises gradually even when the whole debt stock does not immediately reprice. The International Monetary Fund says high refinancing needs and rising debt-service costs are already constraining a number of developing economies. The effect depends on maturities, deficits and revenue available to meet obligations, rather than the global debt total alone. For a bondholder, the path of debt-service costs can therefore matter as much as the published stock.

The breakdown shows emerging markets leading the increase, while debt accumulation in advanced economies slowed. Governments and nonfinancial companies accounted for most of the growth; the addition was not evenly spread across households and financial institutions. The sector matters because a company's repayment capacity depends on its cash flow, whereas a government's depends on revenue and fiscal choices. China's large contribution also does not imply that every emerging debt market will move together. A useful assessment starts by separating sectors and issuers, then testing each borrower's ability to service its obligations.

Global debt stood at about 310% of gross domestic product, roughly 25 percentage points below its early-2021 peak, according to Institute of International Finance figures reported by Reuters. That ratio can look less strained than at the peak even as the dollar value of debt sets a record. The institute attributed much of the lower ratio to growth in nominal output supported by inflation. The ratio alone therefore cannot show that borrowers have reduced their obligations or that financing has become cheaper. Assessing sustainability requires examining both debt and output, then comparing economic growth with debt-service costs.

The interest bill makes that distinction more consequential: advanced economies paid more than $3.3 trillion over the past year on internationally traded government bonds, according to Institute of International Finance figures reported by Reuters. That exceeded estimated global spending on artificial intelligence of $2.6 trillion, defence of $3.1 trillion and clean energy of $2.3 trillion, considered one category at a time. The comparison is not with the three categories combined and does not include every form of government interest. It illustrates the scale of financing costs against large spending categories but does not show an equivalent direct cut to those budgets. Actual fiscal pressure depends on each government's revenue, bond maturities and refinancing yields.

The Bank of England held its policy rate at 3.75% on September 17, 2026, while the Bank of Japan decided on September 18 to raise its overnight-rate target from around 1.0% to around 1.25%. The Japanese central bank said its new guideline would take effect on September 24, a relevant detail when linking the decision to current funding conditions. Policy rates do not instantly become a common cost for all outstanding bonds, some of which carry fixed terms and have yet to mature. The decisions do, however, help shape the environment in which new borrowing is priced, alongside inflation expectations and credit risk. Neither decision alone establishes a solvency problem in the UK or Japan.

For an existing bondholder, a higher required yield can lower the market price of a bond already issued. A buyer of new debt may receive a higher initial yield if other terms are comparable. For the borrower, refinancing at that higher yield raises future payments and reduces fiscal flexibility. Investors positioned for falling bond prices must distinguish a yield increase driven by inflation expectations from one driven by a larger fiscal risk premium. The global debt figure cannot measure either component in an individual market, making the yield curve, maturity schedule and issuer's deficit path more useful for a trade.

The International Monetary Fund has linked rising yields in advanced economies to pressure on emerging-market yield curves, even where some country-specific risk spreads have narrowed. That differs from a direct increase in debt outstanding: a borrower can face higher costs because the reference funding rate has risen. The Fund also says heavy debt service constrains some developing economies' capacity to finance productive spending. This does not make every emerging market equally exposed, because currency, maturity and investor base alter the effect. The report is useful for locating potential refinancing strain without predicting one price move across all bonds.

The next scheduled policy markers are the Bank of Japan's October 29 and 30, 2026 meeting and the Bank of England's November 5, 2026 decision. Each will indicate the direction of monetary funding conditions in its market, while bond yields remain subject to other forces. Testing the debt assessment will also require later data on issuance, maturities, actual interest bills and nominal-output growth. If refinancing costs rise faster than revenue and the economy's capacity to grow, stabilising the debt burden becomes harder; stronger capacity would weaken that reading. Until more data arrive, the global total describes the scale of obligations, while national figures determine the risk attached to each issuer.