USD/BRL Down 5.69% YTD to R$5.1766 as Tariff Invalidation Structurally Weakens Dollar

The SCOTUS tariff ruling was the session’s unambiguous catalyst. The dollar dropped nearly 1% against the real in a single session — the sharpest daily decline since the January rout — as the Supreme Court’s 6–3 decision invalidated IEEPA tariffs and removed one of the largest overhangs on global trade. The real broke below R$5.20 support decisively, closing at R$5.1766, its lowest since late May 2024. This is part of The Rio Times’ daily coverage of the Brazilian real exchange rate and Latin American financial markets.

The ruling’s impact on Brazil was amplified by the DI curve’s response: the entire yield curve shifted lower, with Jan/28 falling 7bp to 12.54% and Jan/35 down 6bp to 13.38%. This reflects two forces — reduced global trade risk supporting EM assets, and the approaching March Copom meeting where a 50bp cut to 14.50% is fully priced. Dollar futures for March fell 0.77% to R$5.1840, confirming forward-looking conviction in real strength.

The US side told a more complex story. Treasury yields rose modestly (10Y +1bp to 4.086%) as the tariff removal creates a fiscal gap — the IEEPA tariffs had been generating ~$20 billion monthly, and their invalidation eliminates roughly three-quarters of the administration’s tariff revenue pipeline. FedWatch odds shifted slightly toward holding in June (46.2% vs 45.6% for a cut), reflecting the core PCE surprise at 3.0% and weak GDP at 1.4%.

Trump’s Section 122 counterpunch (a 10% global tariff, limited to 150 days without Congressional extension) failed to reverse the move. Markets appear to assess this mechanism as legally fragile and economically modest compared to the IEEPA regime. Bruno Shahini of No mad attributed the dollar’s decline to “the combination of signals of a weakening US economy, mixed data, and the breach of the R$5.20 technical support, which intensified the downward move.”

USD/BRL — Daily (TradingView, Feb 21 07:43 UTC, ICE): O: 5.2104 / H: 5.2229 / L: 5.1734 / C: 5.1763 (−0.0341, −0.65%). A large bearish candle that sliced through the 5.20 support level, closing near the session low. This is the most decisive daily decline of February and breaks the consolidation range that held since Feb 10.

Ichimoku remains decisively bearish for the dollar (bullish for the real). Price at 5.1763 sits well below the Tenkan-sen (5.2426), Kijun-sen (5.2807), and the entire cloud (5.3493–5.3805). The 200-SMA at 5.4232 is now 4.8% above spot — a widening gap that confirms the structural downtrend’s acceleration. The entire Ichimoku stack slopes downward with no sign of base formation.

MACD is bearish but continues to improve: the line (−0.0359) sits above the signal (−0.0405), with the histogram at +0.0047. While the histogram has narrowed slightly from yesterday’s +0.0070, it remains positive for the second consecutive day, indicating waning downward momentum even as price makes new lows. This divergence (improving MACD with new price lows) is worth monitoring.

RSI at 38.22 (signal 35.21) has dropped from 40.55, approaching oversold territory. The 30 level is the key threshold — a breach would signal extreme dollar weakness and potential mean-reversion risk. Key dollar support: 5.1734 (session low), 5.1590 (Bollinger lower band), then 5.1539 (May 2024 close low). Resistance: 5.2083, 5.2426 (Tenkan-sen), 5.2807 (Kijun-sen).

SCOTUS fiscal fallout: The tariff invalidation eliminates ~$1.4 trillion in projected 10-year revenue. Refund claims could reach $175 billion. This widens the US fiscal gap and may structurally weaken the dollar — a tailwind for EM currencies including the real. Section 122’s 150-day limit makes it a temporary patch, not a replacement.

Copom March cut: The 50bp cut to 14.50% is fully priced. The carry spread narrows from ~11.25% to ~10.75% — still extraordinarily wide by global standards. The easing cycle’s pace will determine whether BRL strength has legs into H2. Focus consensus remains R$5.50 year-end.

May 2024 lows in sight: The dollar is now within 0.5% of its May 2024 closing low at R$5.1539. A break below this level would mark the strongest real since spring 2024 and could trigger additional momentum selling. RSI approaching 30 means a bounce is statistically due, but structurally the flow dynamics support further real strength.

Election calendar + fiscal: Oct 4 first round. Morgan Stanley projects R$5.60 in Q3 on election volatility, recovering to R$5.30 year-end. The gap between current spot (R$5.18) and consensus year-end (R$5.50) implies ~6% depreciation over the next 10 months — but this has been the consensus miss all year.