Certificate of Deposit
Calculator
Calculate your exact CD earnings with maturity date, early withdrawal penalties, CD ladders, and real-time comparison against HYSA and Money Market accounts — all updating live as you type.
Top 1-yr CD rates Mar 2026: ~4.10%
Shows real purchasing power
Federal + state marginal rate
⚠️ FDIC Limit: Your deposit may exceed the $250,000 FDIC insurance limit per depositor per institution. Consider spreading across multiple FDIC-insured institutions.
What Is a Certificate of Deposit (CD)?
A certificate of deposit (CD) is a time-deposit savings product offered by banks and credit unions that pays a fixed interest rate in exchange for keeping your money deposited for a set period — the "term." Unlike a regular savings account, you agree upfront not to withdraw your money until the CD matures. In exchange, the bank rewards you with a higher, locked-in interest rate for the full term.
CDs are federally insured up to $250,000 per depositor per institution by the FDIC (banks) or NCUA (credit unions). They are one of the safest fixed-income instruments available to individuals — your principal is guaranteed, your rate is guaranteed for the full term, and your earnings are predictable from day one. The trade-off is liquidity: accessing your money before the maturity date typically triggers an early withdrawal penalty.
The core CD proposition: You accept reduced liquidity (can't touch the money until maturity) in exchange for a guaranteed, higher-than-savings rate. In March 2026, the best 1-year CDs offer around 4.10% APY while the national average savings account pays 0.39%. On a $20,000 deposit, that's $820 in guaranteed interest versus $78 — a $742 difference just for agreeing to leave the money alone for 12 months.
Types of CDs
Standard CDs have a fixed rate for a fixed term and charge a penalty for early withdrawal. Beyond the standard CD, several specialty types offer added flexibility. No-penalty CDs allow early withdrawal without a fee, typically at a slightly lower rate than standard CDs. Bump-up CDs let you request one rate increase during the term if APYs rise. Step-up CDs automatically increase the rate on a schedule. Jumbo CDs require a large minimum deposit (typically $100,000+) and sometimes offer marginally higher rates. Brokered CDs are sold through brokerage firms rather than banks and may offer access to a wider range of institutions and rates.
What Is a CD Calculator and What Does It Do?
A CD calculator is a tool that computes exactly how much your money will grow in a certificate of deposit — accounting for your deposit amount, APY, CD term, and compounding frequency. A basic CD calculator outputs your ending balance and interest earned. A comprehensive one goes further: it shows your exact maturity date, your after-tax earnings, your inflation-adjusted real return, the effect of early withdrawal penalties if you need to exit early, and how your CD compares against alternative accounts like high yield savings accounts and money market accounts.
The CatchyTools CD calculator offers four specialized modes, each answering a distinct practical question:
Projects your exact balance at maturity with your maturity date, after-tax earnings, inflation-adjusted real value, effective APY (how compounding changes the stated rate), and daily earnings rate. Supports all 9 compounding frequencies.
Splits your total investment across multiple CDs with staggered maturities. Enter your rungs, each rung's term and APY — pre-loaded with March 2026 rates — and see total interest, per-rung breakdown, and which rung wins. Perfect for maintaining ongoing liquidity.
Calculates the exact penalty and net payout if you need to break your CD early. Supports all three common penalty types: months of interest forfeited, % of principal, or % of accrued interest. Shows how much you truly lose by exiting early vs. holding to maturity.
Compares a CD's fixed rate against a HYSA's variable rate and a money market account's rate over 1–5 years. Shows which account wins on total balance, interest, and after-tax earnings — helping you decide whether locking in the CD rate is worth the liquidity trade-off.
How CD Interest Is Calculated
CD interest uses the standard compound interest formula: A = P × (1 + r/n)^(n×t) — where A is your ending balance, P is your principal, r is the annual interest rate as a decimal, n is the number of compounding periods per year, and t is the term in years. Since CDs have no additional contributions after the opening deposit, this clean formula gives you a precise, predictable answer.
Compounding Frequency Matters More Than You Think
Most banks compound CD interest daily, which produces slightly more than monthly compounding. However, because CDs advertise APY (which already incorporates compounding), two CDs with the same APY produce the same end-of-term balance regardless of compounding frequency. Where compounding frequency matters is when a bank advertises an APR rather than APY — daily compounding converts a 4.00% APR to approximately 4.081% APY, while monthly compounding converts the same APR to approximately 4.074% APY.
The Compounding Frequency Options
Our calculator supports all nine standard compounding frequencies used by US banks and credit unions: Daily (365×), Weekly (52×), Bi-Weekly (26×), Semi-Monthly (24×), Monthly (12×), Bi-Monthly (6×), Quarterly (4×), Semi-Annual (2×), and Annual (1×). Choosing the right one to match your bank's terms gives you the most accurate projection.
Example — $10,000 at 4.10% for 1 year: With daily compounding (n=365), you earn $418.61 in interest for a total of $10,418.61. With monthly compounding (n=12), you earn $418.00 — a difference of only $0.61 on a $10,000 deposit. The APY accounts for this: both scenarios have an effective APY of approximately 4.18% after compounding is applied to the stated 4.10% rate.
Current CD Rates — March 2026
After the Federal Reserve made three consecutive rate cuts in September, October, and December 2025, CD rates have continued declining into 2026. The current environment still offers historically strong yields — well above the 2020–2021 near-zero rate period — but the window for the highest rates seen in 2023–2024 has largely closed. Acting sooner to lock in a CD makes sense before further cuts.
| Bank | Term | APY (Mar 2026) | Min Deposit | Key Note |
|---|---|---|---|---|
| Newtek Bank | 6 months | 4.30% | $2,500 | Best short-term rate |
| Popular Direct | 6 months | 4.10% | $10,000 | High minimum |
| E*TRADE (Morgan Stanley) | 1 year | 4.10% | $0 | No minimum |
| Marcus by Goldman Sachs | 1 year | 4.00% | $500 | Low minimum + bump-up option |
| Popular Direct | 1 year | 4.05% | $10,000 | Competitive 1yr |
| Sallie Mae Bank | 5 years | 4.00% | $2,500 | Best long-term rate |
| Marcus by Goldman Sachs | 5 years | 3.90% | $500 | Solid 5yr with low minimum |
| National Avg (all terms) | 1 year | 1.55% | Varies | Big bank / traditional bank rate |
Rates change frequently: The figures above reflect March 11, 2026. CD rates at online banks have been falling since late 2025 following Fed rate cuts. Use the CD vs. Alternatives mode in the calculator to model your specific deposit with current rates from any institution before opening an account.
The CD Ladder Strategy — Liquidity Without Sacrifice
The biggest complaint about CDs is the lack of liquidity. A CD ladder solves this elegantly. Instead of putting all your money into a single long-term CD, you divide it equally across multiple CDs with staggered maturity dates. As each rung matures, you can either reinvest it in a new CD, withdraw the funds if needed, or redirect to a better-yielding account.
How a 5-Rung Ladder Works
If you have $25,000 to invest, a classic 5-rung ladder divides it into five $5,000 CDs with terms of 12, 24, 36, 48, and 60 months. In month 12, the first CD matures — you access $5,000 (plus interest) with zero penalty. You roll it into a new 60-month CD. In month 24, the second matures — same process. After year five, all CDs are on a rolling 60-month schedule, and one matures every 12 months. You capture long-term rates while never being more than one year from liquidity.
Why laddering beats a single long-term CD right now (March 2026): The current rate environment is "inverted" — shorter-term CDs actually pay higher APYs than longer-term ones. A 6-month CD at 4.30% outyields a 5-year CD at 3.90%. In this environment, a short-to-medium ladder (6 months to 2–3 years) captures the best available rates while maintaining frequent liquidity. Use the CD Ladder mode in the calculator to compare exactly how much interest each rung generates.
Early Withdrawal Penalties — Know Before You Open
Every standard CD charges an early withdrawal penalty (EWP) if you withdraw funds before maturity. The penalty is structured to discourage early access — it can eliminate all the interest you've earned and, in some cases with very short holding periods, eat slightly into your principal. Understanding the penalty before you open is essential.
| Bank | 1-Year CD EWP | 5-Year CD EWP | Notes |
|---|---|---|---|
| Ally Bank | 60 days interest | 150 days interest | Among the lowest penalties |
| Marcus by Goldman Sachs | 90 days interest | 270 days interest | No-penalty CD also available |
| Discover Bank | 3 months interest | 18 months interest | Steep on long terms |
| Synchrony Bank | 90 days interest | 365 days interest | Full year on 5yr CD |
| Capital One | 3 months interest | 6 months interest | More lenient on long terms |
| Typical Big Bank | 6 months interest | 12–24 months interest | Usually harsher than online banks |
The early withdrawal penalty calculator in our tool supports all three common penalty structures: a set number of months of interest forfeited, a flat percentage of your principal, and a percentage of the interest accrued to date. It shows exactly how much you'd receive if you break the CD early versus waiting for maturity — so you can decide whether the early exit is financially worth it in your specific situation.
The no-penalty CD alternative: If you're uncertain about your timeline, several banks offer no-penalty CDs — accounts with a guaranteed APY and no early withdrawal fee after a short initial holding period (typically 6 days). Marcus and Ally both offer no-penalty CDs. The rate is slightly lower than a comparable standard CD, but the flexibility is often worth it for savers who might need access before maturity.
CD vs. HYSA vs. Money Market — Which Wins?
CDs, high yield savings accounts, and money market accounts are all FDIC-insured, all offer competitive rates in the current environment, and all serve the same core purpose: earning interest on cash savings. The right choice depends almost entirely on two factors: how long until you need the money, and how much certainty you want about the rate.
| Feature | CD | HYSA | Money Market Account |
|---|---|---|---|
| Rate Type | Fixed for term | Variable | Variable |
| Typical APY (Mar 2026) | 3.75–4.30% | 3.50–4.03% | 3.50–4.20% |
| Liquidity | Locked (penalty to exit) | Fully liquid | Fully liquid |
| Check Writing | No | Rarely | Often yes |
| Min Balance | $0–$10,000+ | Usually $0 | Often $1K–$25K |
| FDIC Insured | Yes ($250K) | Yes ($250K) | Yes ($250K) |
| Best For | Money you won't need for a defined term | Liquid savings + emergency fund | Larger balances needing check access |
In the current inverted yield curve environment, short-term CDs (6–12 months) often have the highest available rates — outpacing even the best HYSAs and MMAs. The catch is you're locked in. If the Fed cuts rates further (which analysts expect in 2026), a HYSA or MMA rate will fall with it, while a CD holder is protected by their locked-in rate. If rates rise unexpectedly, the CD holder is stuck below market.
Compare your CD against the best HYSA rates. See exactly how much more — or less — a flexible savings account earns versus your locked-in CD over the same period.
Model tiered MMA rates, compare banks, and build a savings goal plan. See whether a money market account with check-writing access outperforms your CD for your timeline.
Taxes on CD Interest
CD interest is taxable as ordinary income in the year it is credited to your account — not when the CD matures. This is an important distinction for multi-year CDs: the IRS requires you to report "original issue discount" (OID) each year the interest accrues, even if you won't receive the cash until maturity. Your bank will issue Form 1099-INT (or 1099-OID for multi-year CDs) for any year you earn or accrue $10 or more in interest.
At a combined 22% federal and 5% state marginal rate, you keep approximately $0.73 of every dollar of gross CD interest. On a $20,000 CD at 4.10% over one year, gross interest is $820. After 27% in taxes, you keep approximately $599. That's still dramatically better than a big-bank savings account at 0.39% ($78 gross, $57 after tax), but the after-tax comparison is the honest one to use when deciding between a CD and a tax-advantaged alternative.
Tax-advantaged CDs: You can hold CDs inside an IRA — either traditional or Roth. In a Roth IRA, your CD interest compounds tax-free and can be withdrawn tax-free in retirement. In a traditional IRA, interest is tax-deferred until withdrawal. For long-term savings you won't need before retirement, an IRA CD eliminates the annual 1099-INT tax drag, meaningfully boosting your real after-tax return.
Frequently Asked Questions
A certificate of deposit (CD) is a savings account where you deposit a fixed amount of money for a predetermined term — typically 3 months to 5 years — and agree not to withdraw it until the maturity date. In exchange, the bank pays you a fixed, guaranteed interest rate that is typically higher than what a regular savings account offers. At maturity, you receive your principal plus all accrued interest. If you need to withdraw before maturity, you pay an early withdrawal penalty. CDs are federally insured up to $250,000, making them one of the safest savings products available.
A CD calculator computes your ending balance and interest earned based on your deposit, APY, compounding frequency, and term length. This calculator uses the compound interest formula A = P(1 + r/n)^(nt), applied precisely to your exact term in months. It's extremely accurate for the inputs provided. The main limitation: the calculator assumes the APY stays constant and the CD is held to maturity (or calculates penalty for early withdrawal). It doesn't model taxes in real-time compounding — the tax figure is applied to total interest as a simplified after-tax estimate.
When a CD reaches its maturity date, most banks provide a short grace period — typically 7 to 10 days — during which you can withdraw your funds, roll them into a new CD, or transfer them to another account without penalty. If you don't take action, most banks automatically renew the CD for the same term at whatever rate the bank is currently offering, which may be lower than your original rate. Always set a calendar reminder before your CD matures so you can evaluate your options rather than defaulting into an automatic rollover at a potentially unfavorable rate.
The argument for acting sooner is compelling: CD rates are fixed at the time you open the account. If the Fed cuts rates further through 2026 (as many analysts project), new CDs opened later will have lower rates. A 1-year CD opened today at 4.10% locks in that rate regardless of what happens to rates over the next 12 months. A HYSA or MMA rate will fall with each Fed cut. The counter-argument is that if rates rise unexpectedly, you're locked below market. Given the current trajectory toward lower rates, locking in a short-to-medium term CD now has historically been a reasonable strategy. Use the CD vs. Alternatives mode to model your specific scenario.
A CD ladder is a strategy where you divide your total investment across multiple CDs with staggered maturity dates rather than putting everything into one CD. For example, $25,000 split into five $5,000 CDs maturing at 1, 2, 3, 4, and 5 years. Benefits: you always have a CD maturing in the near future (liquidity), you capture long-term rates on part of your money, and when each CD matures you can reinvest at whatever rates are then available. The CD Ladder mode in this calculator lets you model any ladder configuration with customizable terms and rates per rung.
Early withdrawal penalties vary by bank and CD term but typically fall into one of three categories: (1) a fixed number of months of interest forfeited — for example, 3 months of interest on a 1-year CD; (2) a flat percentage of your principal; or (3) a percentage of accrued interest. The penalty is almost always deducted from interest first, and most banks are legally prohibited from taking the penalty from your principal. However, if you withdraw very early before enough interest has accrued to cover the penalty, some banks reduce the principal returned. Always check your specific bank's EWP policy before opening a CD if there's any chance you might need the money early.
It depends on your timeline and rate outlook. In March 2026, the best short-term CDs (6–12 months) offer slightly higher rates than the best HYSAs — 4.10–4.30% versus 3.50–4.03%. More importantly, CD rates are fixed while HYSA rates are variable. If the Fed cuts rates further (the expected path in 2026), a HYSA rate will fall while a CD rate stays locked. For money you won't need for a defined period, a CD provides both a higher rate and rate certainty. For your emergency fund or money you might need unexpectedly, the HYSA's full liquidity is worth the marginally lower yield. Use the HYSA Calculator and the CD vs. Alternatives mode together to model your exact situation.
For CDs shorter than one year that mature within a single tax year, you pay taxes only when the CD matures and you receive the interest. For CDs that span multiple years, the IRS requires you to report accrued interest each year under the "original issue discount" (OID) rules — even if you don't actually receive the cash until maturity. Your bank will issue a 1099-OID form for any year interest accrues on a multi-year CD. This means you may owe taxes on money you can't access yet. Factor this into your tax planning, especially for long-term CDs in higher tax brackets.
Yes. FDIC insurance covers all deposit accounts at member banks — checking, savings, money market, and CDs — under the same $250,000 per depositor, per institution, per ownership category limit. Your CD is no more or less protected than your savings account at the same bank. The $250,000 limit is per ownership category: individual accounts, joint accounts, retirement accounts (IRAs), and other categories each carry their own $250,000 limit. A couple could insure over $1 million at a single FDIC-member bank by spreading across ownership categories. This calculator shows a warning if your projected CD balance exceeds $250,000.
This calculator is for educational and planning purposes only and does not constitute financial or investment advice. CD rate projections assume the stated APY held fixed for the full term. Early withdrawal penalty calculations are illustrative — verify exact penalty terms with your bank before opening a CD. FDIC insures deposits up to $250,000 per depositor per institution per ownership category. Tax estimates are simplified; consult a tax professional for your situation. Rate data reflects March 2026. No personal data is collected or stored. ✦ CatchyTools.com