Hub de Comparação entre Bancos Centrais — Diferenciais, Carry, Divergência
Visões lado a lado da política monetária nos nove principais bancos centrais do mundo
O que é o Hub de Comparação
Este hub transforma os dados que já acompanhamos por banco central em visões cruzadas úteis para operadores de câmbio, mesas de renda fixa e jornalistas. Cada página é construída a partir da mesma fonte — taxas de política atuais, trajetórias de taxas implícitas de mercado e o IPC headline de nove bancos centrais (Fed, BCE, Banco da Inglaterra, RBA, BoC, BoJ, RBI, SNB, PBOC) — e é atualizada sempre que o pipeline diário de dados é executado.
O que você pode fazer aqui
- Consultar uma matriz 9x9 de diferenciais das taxas de política, tanto atuais quanto projetadas para os próximos 12 meses
- Ler a mesma matriz em termos reais (taxa nominal menos o IPC headline)
- Classificar todos os 72 pares de moedas ordenados por carry, atual e futuro
- Acompanhar o índice de divergência headline — o desvio padrão das nove taxas de política
- Projetar onde cada spread relevante atinge seu pico e sua mínima ao longo do próximo ano
- Ver onde as reuniões dos bancos centrais coincidem em uma mesma semana
Cada visão remete a uma página mais aprofundada, com metodologia, tabelas classificadas e gráficos para download.
What Is a Rate Differential and Why Does It Matter?
A rate differential is simply the gap between two countries' interest rates. If the Federal Reserve has set its policy rate at 4.5% and the Bank of Japan has set its at 0.5%, the USD–JPY differential is +4.0 percentage points in favor of the dollar. That seemingly dry number is the engine behind one of the largest trades in global finance: the carry trade.
Here is how it works in practice. A trader borrows yen at 0.5%, converts the yen into dollars, and parks the dollars in a US money-market instrument paying 4.5%. As long as the yen–dollar exchange rate stays roughly where it started, the trader pockets the 4.0 percentage point spread — the "carry" — every year. Multiply that by leverage and large position sizes and you can see why hedge funds, banks, and even Japanese retail investors (the famous Mrs. Watanabe) chase these spreads aggressively.
The catch is currency risk. If the yen suddenly strengthens 5% against the dollar, the trader has to convert dollars back into yen at a worse rate, wiping out a year of carry in a few days. That is why FX traders watch central bank meetings so carefully — a surprise hike from the BoJ or an unexpected cut from the Fed can compress the differential and trigger violent unwinds. Cross-bank comparison tables like the ones below show all 72 ordered currency pairs at once so you can see at a glance where the biggest carries are and where they are about to be eroded by upcoming policy moves.
CIP, Carry Factors, and Divergence-Cycle Dynamics
Covered interest rate parity (CIP) — the no-arbitrage condition that F/S = (1+id)/(1+if) — held tightly across G10 pairs until 2008 but has exhibited persistent violations since. The cross-currency basis, particularly the three-month USD-EUR and USD-JPY basis, widens predictably around quarter-end and year-end as European and Japanese banks compete for dollar funding against constrained balance-sheet capacity at US dealers (Du-Tepper-Verdelhan 2018). Basis dislocations of 30-80bp on the JPY leg are routine in the December turn and feed directly into hedged-yield calculations for foreign holders of USD fixed income; the JGB-vs-hedged-Treasury switch trade hinges on these cross-currency basis levels rather than the headline rate differential.
Cross-sectional FX carry as documented by Lustig, Roussanov and Verdelhan (2011) earns a positive excess return on average, but with negatively skewed payoffs and crash risk concentrated in equity drawdowns and VIX spikes — carry is short a volatility-correlated put. The factor premium has compressed post-2014 as G10 differentials narrowed under synchronized easing. Divergence cycles (Fed tightening while BoJ holds, ECB cutting while BoE holds) generate the largest term-structure dispersions and the richest opportunity set for relative-value rates trades; alignment cycles compress dispersion and shift the alpha source from directional differentials to curve-shape and term-premium plays. Meeting-collision weeks — when two G3 central banks decide within 48 hours — exhibit elevated implied vol in the affected pairs and a measurable risk premium that does not fully unwind in the post-event tape, suggesting persistent compensation for committee-asynchrony risk.
Headline numbers
Comparison views
Rate Differentials Matrix
9x9 matrix of policy rate spreads across all nine central banks, current and 12 months forward.
Real Rate Differentials
Same 9x9 matrix, in real terms — nominal policy rate minus headline CPI for each bank.
FX Carry Ranking
All 72 ordered currency pairs ranked by current carry, with 12-month forward carry side-by-side.
Policy Divergence
Headline divergence index, history chart, and the headline pairs ranked by 12-month spread amplitude.
Meeting Calendar
Six-month calendar of meetings across all nine banks, with collision weeks flagged.
Currency pair deep dives
Diferencial de Taxas AUD/USD — RBA vs Federal Reserve
O beta de commodities do Aussie, o spread RBA-Fed e o que o ciclo implica
Diferencial de Taxas EUR/USD — BCE vs Federal Reserve
Como as trajetórias do BCE e do Fed moldam o par de câmbio mais negociado do mundo
Diferencial de Taxas GBP/USD — Banco da Inglaterra vs Federal Reserve
A âncora de diferencial de taxas da cable e a trajetória de convergência BoE-Fed
Diferencial de Taxas USD/CAD — Federal Reserve vs Banco do Canadá
As duas âncoras do loonie: petróleo e o spread BoC-Fed
Diferencial de Taxas USD/CHF — Federal Reserve vs Banco Nacional da Suíça
Carry vs fluxos de refúgio no cruzamento dólar-franco suíço
Diferencial de Taxas USD/CNY — Federal Reserve vs Banco do Povo da China
Um par administrado em que o diferencial de taxas interage com o fixing diário do PBOC
Diferencial de Taxas USD/INR — Federal Reserve vs Banco de Reserva da Índia
O par de alto carry em que a tendência de depreciação do INR compensa o rendimento nominal
Diferencial de Taxas USD/JPY — Federal Reserve vs Banco do Japão
O par de carry por excelência: um amplo spread nominal e a trajetória singular do BoJ