I Bond Calculator 2023
Value of a 2023 Series I savings bond purchase.
Your I-bond numbers never leave your browser — all math runs locally.Try: Purchase year=2023, Purchase amount=1000, Valuation year=2026, Valuation month=8 → 6.88%, 43, $1,274, $274, $22, $1,252
How to use
2023 I-bonds carried a 0.40% fixed rate and ~3.4% semiannual inflation, a composite near 6.9% — among the highest on record.
FAQ
Why were 2023 rates high?
A 2022 inflation spike lifted the semiannual rate; the fixed portion was just 0.40%.
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