Guinea-Bissau’s headline inflation fell to −0.67% y/y in Sep 2026.

Lower is better. Lower inflation protects what wages, pensions and savings can buy, which is why a lower reading is better for this measure. The latest figure is −0.67% y/y for Sep 2026, up from −1.8% y/y in Sep 2025, a change of 1.1 percentage points over the year. Since Oct 2024 the series has ranged from a low of −4.3% y/y in Mar 2026 to a high of 7.1% y/y in Mar 2025. The current reading sits in the lower part of that range, well below the early 2025 peak and above the Mar 2026 trough.

Why it matters. With prices on average slightly lower than a year ago, a household's money buys marginally more than it did in Sep 2025. Prices have been falling more slowly since Mar 2026, which leaves firms selling into a market where prices are close to flat and gives them little room to raise margins through price increases. The state can plan budgets without pressure from fast-rising prices. The next monthly reading will show whether the rate crosses zero.