Defending the Kestrel Peg: Reserves, Parity and the Balance-Sheet Trap

PPP. The inflation differential is 6.5 points a year. Compounded over three years the price level rises about (1.065)³ = 1.21, implying the kestrel is roughly 20% overvalued in real terms if the peg holds. That is not a prediction of the spot rate - PPP is a long-run anchor - but it does mean competitiveness erodes every year the peg is defended, which feeds the current account deficit.

Interest parity. The ten-year spread is 11.6 − 4.2 = 740 basis points. With a credibly fixed exchange rate, that spread should reflect only credit and liquidity risk - perhaps 200–300bp for a sovereign with 58% debt. The residual of 400bp or more is the market pricing expected depreciation or default. Uncovered interest parity says the market is charging for a risk it thinks is real; the peg is not believed.

Reserves. The fall of $9bn in nine months is roughly $1bn a month. Against imports of $95bn a year, or about $7.9bn a month, reserves of $22bn cover 2.8 months - below the conventional three-month benchmark, and falling. At the current burn rate the central bank has under two years of cover, and the dollar debt maturing within 2.1 years adds a refinancing claim on the same reserves.

Judgement. The peg is not sustainable on current policies. PPP says the real rate is misaligned, the yield spread says the market expects a break, and the reserve trajectory says the defence is finite. The three reinforce each other: defending with higher rates raises the fiscal cost of the dollar debt and slows growth, which worsens the fiscal and current account position, which requires further defence. Sustainability requires a policy package that changes the fundamentals, not more intervention.

Bond yield. Two forces pull in opposite directions. Higher rates raise the risk-free component and the cost of new borrowing, which pushes yields up. But if the move restores credibility, lowers expected depreciation and slows capital flight, the risk premium falls and the yield can fall. Which dominates depends on whether the market reads 9% as a credible commitment or as a desperate one. Historically, a rate rise that is not backed by fiscal consolidation widens the spread, because the market concludes the defence will fail anyway.

Banking system. A 300bp rise in one move is severe. Domestic borrowers - mortgages, small firms - reprice quickly, raising debt-service burdens and non-performing loans. If the banks hold large holdings of government paper, the mark-to-market loss on the bond portfolio erodes capital at the same moment credit losses rise. A rate rise that is meant to defend the currency can instead weaken the banks the currency depends on.

Fiscal position. Debt is 58% of GDP, of which 40% is dollar-denominated: about 23% of GDP is foreign currency debt and therefore untouched by the domestic rate. The other 35% of GDP is domestic, and with 2.1-year average maturity it reprices fast - within roughly two years the whole stock resets. A 300bp rise on 35% of GDP adds roughly 1.05% of GDP to annual interest cost at full pass-through, on top of an already high deficit. Half of the tightening therefore works against the government's own balance sheet.

Conclusion. The rate rise buys time at a high price. It is only worth doing as part of a package - credible fiscal consolidation, a clear reserve target and a stated exit strategy - otherwise it raises the fiscal cost of failure without changing the fundamentals.

Balance-sheet effect (the strongest argument against). Dollar debt of 23% of GDP revalues in local currency by 15%, a hit of about 3.5% of GDP on the public balance sheet, plus similar unhedged losses in the corporate and banking sectors. With reserves already at 2.8 months of imports, that loss may trigger defaults and a banking recapitalisation, which is the classic emerging-market devaluation trap: devaluation is most needed precisely where it is most damaging.

Inflation pass-through. With imports at $95bn on a shrinking economy and 9% inflation already, pass-through of perhaps 0.3 implies roughly 4.5 points added to inflation - from 9% to around 13.5% within a year, more if indexation is widespread and if the central bank accommodates. The real depreciation, and hence the competitiveness gain, is correspondingly eroded: a 15% nominal move may deliver only 8–10% real.

Credibility. A first devaluation after repeated promises that the peg will hold is expensive: it teaches the market that the commitment is breakable, raising the risk premium on future borrowing. A pre-announced, packaged realignment with fiscal consolidation and an inflation target is cheaper than a forced float.

Weighing it up. The peg at current policies is not sustainable - reserves are finite and the spread says the market expects a break. Continuing to defend therefore does not preserve credibility; it merely chooses a larger, disorderly break later. The preferable route is a negotiated adjustment: devalue modestly and credibly (perhaps with a band rather than a new hard peg), pair it with fiscal consolidation and an inflation anchor, and arrange external support or a debt extension so the 2.1-year rollover does not crystallise the balance-sheet loss all at once. Between the two options as stated, the 15% devaluation is likely to be less costly than a defended peg that collapses anyway - but only if the accompanying package contains the balance-sheet damage.