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CD Calculator

3-Year CD Calculator

See what three years in a CD actually earns.

Al vencimiento
28.000,10 US$
Interés
3000,10 US$
Tu CD
$
%

El tipo se expresa como

m

3 años

Plazos habituales

Frecuencia de capitalización

Valor al vencimiento
28.000,10 US$
Interés total ganado
3000,10 US$
APY efectivo
3,85%

25.000,00 US$ en un CD a 3 años al 3,85% APY, con capitalización diaria, crece hasta 28.000,10 US$: son 3000,10 US$ de intereses, una media de 83,34 US$ al mes.

Saldo durante el plazo

CapitalInterés
Ver las cifras en una tabla
Saldo durante el plazo
MesCapitalInterésSaldo
En la apertura25.000,00 US$0,00 US$25.000,00 US$
7mo25.000,00 US$557,03 US$25.557,03 US$
14mo25.000,00 US$1126,48 US$26.126,48 US$
22mo25.000,00 US$1792,83 US$26.792,83 US$
29mo25.000,00 US$2389,81 US$27.389,81 US$
3y25.000,00 US$3000,10 US$28.000,10 US$

Calculated in your browser using A = P(1 + r/n)nt. Nothing is sent to a server. Figures are before tax; confirm exact terms with your bank.

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La respuesta corta

How much does a 3-year CD earn?

A 3-year CD fixes your rate for 36 months, which is long enough that the compounding starts to do real work and short enough that it does not dominate your savings plan. A $25,000 deposit at 3.85% APY earns $3,000.10 and matures at $28,000.10; on $50,000 the same term returns $56,000.19. Against rolling a one-year CD three times at 4.25%, the three-year lock currently finishes $324.79 behind — which is the cost of removing three years of reinvestment risk from your plan. Three years is also where the early withdrawal penalty becomes a genuine constraint rather than a footnote: most banks charge 180 to 365 days of interest at this term, so breaking the CD in year one can leave you with less than you deposited. The term suits money you are confident you will not touch, in a plan where knowing the exact figure three years out is worth more than the last few basis points.

Fórmula y método

Cómo se calcula

A = P(1 + r/n)^(nt), t = 3

Three years of compounding. On $25,000 at 3.85% the third year alone contributes $1,037.80.

A
Maturity value after 36 months
P
Opening deposit
r
Nominal annual rate as a decimal
n
Compounding periods per year (daily = 365)
t
3 — the term in years

Paso a paso

  1. 1

    Convert the 36-month rate to a decimal and divide by n.

  2. 2

    Raise (1 + r/n) to the power n × 3.

  3. 3

    Multiply by the deposit for the maturity value.

  4. 4

    Subtract the deposit for the total interest across the three years.

  5. 5

    Compare against the one-year rate cubed to see what the lock is costing or saving.

Guía

Cómo usar esta calculadora

Cuatro datos, resultados en vivo. No hay nada que enviar ni ningún registro.
  1. 1

    Enter your deposit

    Type the amount or drag the slider. Three years of interest on a large deposit can push the balance past the $250,000 insurance limit — check the maturity value, not the opening figure.

  2. 2

    Enter the 36-month rate

    Use the rate quoted for the three-year term. Credit unions are frequently more competitive than banks at this length.

  3. 3

    Read the year-by-year chart

    The growth chart makes the compounding visible: each year adds more than the last on an unchanged rate.

  4. 4

    Check the penalty before committing

    At three years the penalty is usually 180 to 365 days of interest. Confirm which, because it decides whether an early exit is survivable.

Ejemplos

Ejemplos resueltos

Cifras reales, resueltas de principio a fin, para que puedas contrastar la calculadora con tus propios números.

A $25,000 deposit in a 36-month CD

Datos

Deposit
$25,000
Rate
3.85% APY
Term
36 months

Resultado

Year 1 interest
$962.50
Year 2 interest
$999.56
Year 3 interest
$1,038.04
Maturity value
$28,000.10

The third year pays $75.54 more than the first at an identical rate. Over three years compounding adds $112.60 above what simple interest would have produced — small in absolute terms, and the beginning of the curve that makes long CDs work.

Three years locked versus rolling a 1-year CD three times, on $25,000

Datos

36-month CD
3.85% APY
Three 12-month CDs
4.25% APY, rate assumed to hold
Deposit
$25,000

Resultado

Locked for 36 months
$28,000.10
Rolled three times at 4.25%
$28,324.89
Advantage to rolling
$324.79

Rolling is $324.79 ahead if short rates hold for three years — and that is a long time to assume anything. The three-year CD converts an unknown into a known for about 1.2% of the deposit, which is a defensible price for anyone who needs the figure to be certain.

Metodología

Precisión y supuestos

Toda calculadora parte de supuestos. Estos son los nuestros, dichos con claridad, para que sepas exactamente qué contemplan las cifras y qué no.
  • The rolling comparison holds the one-year rate at 4.25% for all three years. Over a three-year horizon that assumption is doing a great deal of work.

  • Interest compounds inside the CD for the full term. Taking it as income removes the year-on-year growth shown in the first example.

  • The rate is fixed. Step-rate and bump-up CDs at this term follow a schedule instead and need to be priced period by period.

  • Figures are gross of tax. A three-year CD produces taxable interest in three separate years, all payable before maturity.

Las convenciones siguen la Regulation DD (12 CFR 1030), que regula cómo las entidades estadounidenses divulgan el APY en cuentas de depósito. Los depósitos en entidades aseguradas están protegidos por la FDIC hasta 250.000 USD por depositante, por banco y por categoría de titularidad.

Fuentes primarias

De dónde salen estas reglas

Las convenciones que sigue esta calculadora las fijan los reguladores, no nosotros. Cada una enlaza al organismo que la emite para que puedas comprobarla en lugar de creernos.

Detalles

Datos y reglas clave

Hechos concretos que conviene conocer antes de abrir o renovar un CD.
  • Three years is roughly where the early withdrawal penalty stops being a footnote. A 365-day penalty on $25,000 at 3.85% is $962.50 — more than the entire first year's interest, so breaking in year one returns less than the deposit.

  • Credit union share certificates are often most competitive at the two-to-four-year range. Coverage comes from the NCUA rather than the FDIC, at the same $250,000 limit and with the same government backing.

  • The interest is taxed annually as ordinary income, so a three-year CD produces three 1099-INT forms and three tax bills on money you cannot reach.

  • Inflation matters at this length. Three years at 3.85% with inflation at 2.5% is a real return of about 1.3% a year — positive, but a long way from the headline.

  • A 36-month rung is the natural middle of a five-year ladder. If the whole plan is one three-year CD, consider splitting it across 1, 2 and 3-year terms instead for the same average yield and far more flexibility.

Aplicaciones

Para quién es esta calculadora

  • Savers with a defined three-year goal

    A deposit, a planned renovation, a school fee. Knowing the exact figure available on a specific date three years out is worth more to a plan than an extra 0.40%.

  • Anyone expecting rate cuts

    Three years is a substantial lock. If your view is that short rates are heading down, this is the term where that view starts to pay for itself.

  • Conservative portfolio holders

    For the fixed-income sleeve of a portfolio, a 36-month CD is a guaranteed-return, insured alternative to a short-duration bond fund — without the mark-to-market movement.

Preguntas frecuentes

3-Year CD Calculator: preguntas frecuentes

Respuestas directas a las preguntas más habituales sobre este cálculo. Hay más en el centro de preguntas frecuentes.
  • At 3.85% APY, a $25,000 deposit earns $3,000.10 over the term and matures at $28,000.10. The three years pay $962.50, $999.56 and $1,038.04 respectively — each larger than the last, because each is earned on a bigger balance.

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  • Fórmulas de estándar bancario

    Usa las mismas convenciones de interés compuesto y APY que aplican los bancos bajo la Regulation DD.

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Three years, priced exactly

See the year-by-year interest, the maturity value and what the lock-up is costing against staying short.