Compound Interest Calculator Lima

Compound Interest Calculator for Lima

Savings accounts and deposits in Lima are priced off the Central Reserve Bank of Peru policy rate, which stood at 4.25% at the end of September 2026. National consumer price inflation was 4.55% in September 2026, so a saver earning exactly the policy rate would have a real return of -0.29% a year before tax.

Facts that change the answer

• Central Reserve Bank of Peru policy rate: 4.25% (September 2026, BIS series)
• Annual CPI inflation: 4.55% (September 2026)
• Real return at the policy rate: -0.29% per year (computed as (1 + 4.25%) / (1 + 4.55%) minus 1)
• Policy rate at each December: 2016 4.25%, 2017 3.25%, 2018 2.75%, 2019 2.25%, 2020 0.25%, 2021 2.5%, 2022 7.5%, 2023 6.75%, 2024 5%, 2025 4.25%
• Policy rate moves since January 2020 (month-end data): March 2020 2.25% to 1.25%; April 2020 1.25% to 0.25%; August 2021 0.25% to 0.5%; September 2021 0.5% to 1%; October 2021 1% to 1.5%; November 2021 1.5% to 2%; December 2021 2% to 2.5%; January 2022 2.5% to 3%; February 2022 3% to 3.5%; March 2022 3.5% to 4%; April 2022 4% to 4.5%; May 2022 4.5% to 5%; June 2022 5% to 5.5%; July 2022 5.5% to 6%; August 2022 6% to 6.5%; September 2022 6.5% to 6.75%; October 2022 6.75% to 7%; November 2022 7% to 7.25%; December 2022 7.25% to 7.5%; January 2023 7.5% to 7.75%; September 2023 7.75% to 7.5%; October 2023 7.5% to 7.25%; November 2023 7.25% to 7%; December 2023 7% to 6.75%; January 2024 6.75% to 6.5%; February 2024 6.5% to 6.25%; April 2024 6.25% to 6%; May 2024 6% to 5.75%; August 2024 5.75% to 5.5%; September 2024 5.5% to 5.25%; November 2024 5.25% to 5%; January 2025 5% to 4.75%; May 2025 4.75% to 4.5%; September 2025 4.5% to 4.25%
• In 7 of the last 10 years the December policy rate was above that year's average inflation

Worked example for Lima

Start with PEN 30,000, add PEN 300 a month and use 4.25% compounded monthly. After 10 years you would have PEN 90,615 from PEN 66,000 of deposits; after 20 years PEN 183,263 from PEN 102,000. These amounts in Peruvian sol are only examples; real deposit rates offered by banks in Lima are usually below or above the policy rate depending on the term and the bank.

To see what that balance is worth in today's money, take inflation into account: at 4.55% a year, PEN 90,615 in ten years has the buying power of about PEN 58,079 now. Recent history for Lima's currency: 2020: 0.25% rate vs 1.8% inflation, 2021: 2.5% rate vs 4.0% inflation, 2022: 7.5% rate vs 7.9% inflation, 2023: 6.75% rate vs 6.3% inflation, 2024: 5% rate vs 2.4% inflation, 2025: 4.25% rate vs 1.5% inflation.

If you hold the money in a fixed deposit, the rate you lock in matters more than the compounding frequency. On PEN 30,000 over 10 years at 4.25%, switching from yearly to monthly compounding adds only PEN 367, while a rate 1 point higher adds PEN 4,802.

Sources: BIS central bank policy rates · BIS consumer price statistics. Checked 5 November 2026. For how the maths works, see the Compound Interest Calculator guide.