💰 Finance · US & Canada · Fixed-term deposits
CD / GIC Calculator
Estimate the interest and maturity value of a US certificate of deposit (CD) or a Canadian guaranteed investment certificate (GIC). Enter your deposit, annual rate and term; open advanced options only when you need payout, early-withdrawal, tax, comparison, ladder or renewal scenarios.
🧾 Your CD / GIC terms
Enter the deposit amount, annual rate and term from the product you are considering.
Currency: USD. Switching region clears inputs; no currency conversion.
📊 Estimated returns and maturity
See your estimated investment value, interest and any selected advanced deductions.
Estimates only. Your bank's contract, accrual convention and redemption rules take priority.
🧰 Advanced planning tools
Explore comparisons, deposit ladders, renewals and interest-rate scenarios when needed. Each tool stays collapsed until opened.
Compare two CDs or GICsSeparate rates, terms, principal and redemption rules
CD / GIC ladderAllocate deposits into separately maturing rungs, up to 32
Rung 1Set this rung’s deposit, rate and maturity
Rung 2Set this rung’s deposit, rate and maturity
Renewal and rollover planningPlan up to 20 sequential terms with explicit reinvestment sources
Interest-rate sensitivityTest what happens when quoted rates move up or down
Financial Disclaimer: For planning and educational use, not a bank quote, guarantee, financial recommendation, tax opinion or legal advice. Your actual CD/GIC agreement determines the rate basis, interest credits, maturity, liquidity, penalties and fees. Rates are entered by you; nothing is retrieved from a bank. Verify the issuer and contract before making a deposit.
📘 How to use the CD / GIC calculator
How do I calculate CD or GIC interest? Enter your principal, choose US for a USD CD or CA for a CAD GIC, and enter your own quoted annual rate and term. Match the interest method to your contract, then calculate estimated interest and maturity value. Use Advanced options for APR, simple interest, actual dates or payouts; no bank terms are assumed.
- Choose 🇺🇸 US for a USD CD or 🇨🇦 CA for a CAD GIC; this is a currency selector, not a bank contract selector.
- Enter your initial deposit, the rate as stated in the offer, and a term in months or years.
- Select Calculate CD / GIC to view the estimated balance, interest and total modeled value.
- Open Advanced options only if the contract requires a different rate definition, actual dates, periodic payouts, penalties or taxes.
- Use the separate collapsed planning tools to compare two offers, divide a deposit into a ladder, model renewals or test rate scenarios.
For a 6-month, 1-year or 5-year CD or GIC, enter 6, 12 or 60 months. Use the actual quote for each term: a longer deposit may have a different rate. The initial form starts empty. Changing the region clears entered values; USD/CAD selects region and currency, not foreign-exchange conversion. Unsupported advanced combinations return an explicit error instead of silently dropping conditions.
🧮 CD / GIC interest and maturity formulas
Principal (P) is your initial deposit; r is a quoted annual rate in decimal form; t is the modeled accrual term in years; and m is the number of compounding periods per year. A is the maturity value when interest is retained and no penalties or taxes apply. APY is also a decimal in the formula: enter 4.00% as 4, which the model uses as 0.04.
Effective annual yield (APY)
A = P × (1 + APY)^t
APY already includes the annualized effect of compounding. Do not apply compounding frequency a second time.
Nominal APR with compounding
A = P × (1 + r / m)^(m × t)
Nominal APR excludes the effect of compounding. Use the contract frequency m; noninteger periods use this model's exponential convention, which may differ from a bank's accrual rules.
Simple annual interest
A = P × (1 + r × t)
Interest does not earn interest. This can model certain noncompounding product assumptions.
For a maturity-only payment without penalties or taxes, interest earned = A − P. Simple interest uses only the original principal; compound interest also earns interest on retained interest. For periodic interest payouts, the calculator does not automatically reinvest the cash: the bank balance at maturity and the total economic value including earlier payouts are distinct figures. Early redemption and simplified taxes can alter net proceeds.
🔎 Example: USD 10,000 in a 6-month CD at 4.00% APY
With a hypothetical 4.00% APY, USD 10,000 retained until maturity for an abstract 6 months (t = 0.5) earns USD 10,000 × [(1.04)0.5 − 1] ≈ USD 198.04. Maturity value is approximately USD 10,198.04, assuming no tax, penalties or additional cash flows. This is not an actual-date calculation.
Initial deposit (USD)
$10,000.00
Estimated interest (USD)
$198.04
Estimated maturity value (USD)
$10,198.04
🇨🇦 Example: CAD 10,000 in a 1-year GIC with simple interest
At a hypothetical 4.00% simple annual rate for 12 months (t = 1), a CAD 10,000 GIC earns CAD 10,000 × 0.04 × 1 = CAD 400.00. With interest paid at maturity and no tax, penalties or additional cash flows, maturity value is CAD 10,400.00. This example uses an abstract one-year term, not calendar dates.
Both examples are illustrative, not current bank quotes or regulated APY disclosures. Duration terms use t = months / 12. For actual dates, select the contract's day count: ACT/360, ACT/365F or ACT/366F divides elapsed days by the fixed divisor; ACT/ACT-ISDA splits the period by calendar year and uses 365 or 366 for each portion. Display values are rounded, while the engine retains unrounded intermediate amounts; it is not a bank's exact-cent account ledger.
🎯 When to use this CD / GIC calculator
Compare 6-month, 1-year and 5-year terms
Enter each term's own quoted rate to estimate interest and when funds become available. A 5-year CD or GIC ties up money longer than a 6-month product. For unequal holding periods, compare terms and annualized estimates without treating higher total interest as an automatic winner.
Plan a deposit ladder
For a CD ladder or Canadian GIC ladder, allocate money among separately maturing rungs and view combined cash flows to plan access to funds. A ladder does not guarantee higher returns; no automatic rollover or future rate forecast is presumed.
Test early-redemption costs
A US CD may impose an early-withdrawal penalty that consumes interest or principal. A Canadian cashable or redeemable GIC follows its stated access conditions; a non-redeemable GIC may prohibit early redemption. Model withdrawal only when the contract allows it, not merely because you can enter a penalty.
Explore CD or GIC renewal
Enter a new rate and term for each stage, then choose whether to reinvest principal or net maturity proceeds. Earlier paid interest requires an explicit reinvestment amount. Future results depend on your assumed renewal rates; today's quote is not guaranteed to be available at maturity.
Monthly payouts vs interest at maturity
Use periodic payouts to plan income received during the term. Paid interest is held outside the deposit and does not compound in this model. Retained interest may compound under the chosen rate convention. Confirm which payout schedules and rates the actual CD or GIC offers.
Estimate after-tax interest
Enter your own tax rate, tax basis and payment timing for a simplified scenario funded outside the deposit. Actual tax treatment may differ. The calculator does not apply TFSA, RRSP, FHSA or IRA account rules, and a negative return does not automatically create a tax credit.
🇺🇸 US CDs and 🇨🇦 Canadian GICs: important differences
A US certificate of deposit is a time-deposit product; a Canadian GIC is a fixed-term investment offered by an issuer. Both can have specified terms and returns, but liquidity, interest payment, rate disclosure and eligible deposit protection depend on the specific institution and product. This calculator changes currency between USD and CAD; it does not choose a contract type or assess deposit insurance eligibility.
United States: FDIC context
Eligible CDs at FDIC-insured banks count with other deposits in the same ownership category. The standard limit is $250,000 per depositor, per insured bank, per ownership category.FDIC coverage guidance.
Canada: CDIC context
Eligible GICs issued by CDIC member institutions can qualify for coverage, normally up to $100,000 per insured category per member. Issuer, category and ownership conditions matter.CDIC GIC guidance.
🛡️ Model limits and source methodology
The model supports user-entered APY or nominal annual rates, simple interest, bounded interest schedules, early withdrawal, a simplified user-defined tax scenario, two-deposit comparison, ladders, renewals and sensitivity analysis. It does not calculate legal bank APY disclosures, registered-account rules, insurer eligibility, market-linked returns, live quotes, currency conversion, holiday settlement or bank-specific cent-rounding policies. Some advanced combinations are intentionally rejected rather than estimated without support.
For disclosure and withdrawal rules, refer to the Federal Reserve's Regulation DD overview and the OCC's CD early-withdrawal explanation. These sources provide regulatory context; they do not validate any entered bank terms or replace the issuer's documents.
For Canadian rate, interest-payment, redemption and renewal disclosures, see FCAC's GIC and term-deposit guidance. Cashable and non-redeemable terminology is illustrated in CIBC's GIC glossary; its product examples are not rules for every issuer.
❓ CD / GIC calculator FAQ
How do I calculate interest on a CD or GIC?
Enter your deposit, quoted annual rate, and term, then calculate. For an APY-based estimate with interest retained to maturity, the model uses principal multiplied by (1 + APY) raised to the term in years. Actual daily accrual and payout agreements may produce a different total.
What is the difference between APY and APR on a deposit?
APY (effective annual yield) expresses the annual growth rate after compounding. A nominal annual rate, sometimes labeled APR in mathematical comparisons, requires a compounding frequency. A bank's required APY disclosure may follow regulatory rules that differ from this planning model; use the quote definition shown in your bank's documents.
Can I calculate simple or compound GIC interest in Canada?
Yes. Select CA for CAD, then choose simple annual interest or a nominal rate with the issuer's compounding frequency in Advanced options. GICs can use simple or compound interest; follow your contract rather than assuming one method. Canada selection does not automatically apply an issuer's payout, tax or redemption rules.
Does this calculator include early withdrawal penalties?
Yes, when you explicitly enable early withdrawal and enter the product's penalty rule. A US CD penalty can exceed earned interest and reduce principal. Canadian cashable or redeemable GICs have their own access conditions; a non-redeemable GIC may not permit early redemption. Entering a penalty does not make a locked product redeemable.
Are taxes included in the CD or GIC interest estimate?
Only when you activate the simplified tax scenario and choose its rate, basis and timing. Tax is modeled as paid from external funds. The tool does not determine your tax bracket or reporting year, apply TFSA, RRSP, FHSA or IRA rules, or turn losses into tax credits. A zero-rate scenario alone does not model a tax-advantaged account.
What happens when a CD or GIC pays interest monthly?
Monthly interest payments are separate cash flows and do not earn further interest in this model. Retained interest can compound instead, if the rate convention supports it. Compare both the payment at maturity and total value including earlier payouts. Availability, payout rates and minimum terms depend on the issuer; not every CD or GIC offers monthly payments.
Can I compare CDs or GICs with different terms?
You can view each offer's estimated result separately. The calculator does not declare a winner from total interest when deposit amounts, holding periods, or start dates differ. Its annualized terminal-value equivalent is for planning and is not a money-weighted IRR.
How does a CD or GIC ladder work in this calculator?
A ladder divides an explicitly entered total deposit among individual products with separate maturity dates or terms. The calculator totals their cash flows without assuming that each rung automatically renews. It does not choose products, forecast future rates, or automatically optimize allocations.
Does the calculator use live bank rates or guarantee returns?
No. Enter the interest rate and contract details yourself. Results are mathematical estimates; fees, bank rounding, rate conditions, deposit insurance eligibility, and actual redemption terms must be checked with the issuing institution.
How much interest does a $10,000 six-month CD earn?
At a hypothetical 4.00% APY, with interest retained for an abstract half-year, a USD 10,000 CD earns approximately USD 198.04 and matures at USD 10,198.04 before tax or penalties. This uses effective annual growth, not half the APY as simple interest. Your quoted rate and actual-date convention may give a different result.
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