Median HYSA Hit 3.40% by Mid-October — Money Markets 3.45%, 18-Month CDs Led at +25 bps: Top Accounts Still Pay Up to 4.27% Before the Oct. 28 Fed (Oct. 18)

Mid-October 2026: median high-yield savings hit 3.40% APY and top accounts still advertise up to about 4.27% — roughly six times the 0.65% national average. Photo: Kaboompics / Pexels (4968544), Pexels License.

Last updated Oct. 18, 2026. Median APYs and rate-change counts below come from the ByTheMath October 2026 savings-rates study (data as of Oct. 18). Top advertised HYSA APYs were checked against Bankrate on Oct. 18 and NerdWallet (~Oct. 16). Rates change often — confirm with the institution before you open or move money. This is education, not personalized advice.

Mid-October finally gave U.S. savers something to celebrate. After the Federal Reserve’s first hike since 2023 (September 2026, lifting the federal funds target to 3.75%–4.00%), deposit rates have started to climb again — and the move shows up in the middle of the market, not only in flashy teaser ads.

According to ByTheMath’s October study (2,220 personal deposit products from 360 banks and credit unions, measured from Oct. 1 to Oct. 18), the median high-yield savings APY rose from 3.30% to 3.40% (+10 basis points). Money market accounts moved even faster, from 3.31% to 3.45% (+15 bps). Every CD term ByTheMath tracks ended higher; the 18-month CD led with a +25 bps jump (3.70% → 3.95%). Month to date, the scanner recorded 353 APY increases and only 22 decreases across tracked products — including 303 CD increases vs. 16 cuts.

At the same time, the best advertised HYSAs still pay far above those medians. Bankrate’s Oct. 18 roundup puts Peak Bank at 4.27% APY ($100 minimum) — roughly six times the national average savings rate of 0.65%. Happen, EverBank and Western State Bank cluster near 4.20%; CIT’s Platinum Savings lists 4.25% when you hold at least $5,000 for the top tier.

This post is the mid-month scorecard. We covered the early post-Fed narrative on Oct. 12 in Savings rates are climbing again after the Fed hike and the lock-in angle in CD rates hit up to 5.20% today — lock before the next FOMC. Today’s job is different: where medians sit as of Oct. 18, where the top HYSAs still pay, and how to choose HYSA vs. money market vs. CD before the Oct. 28 FOMC.

The 30-second version

• Median HYSA: 3.40% as of Oct. 18 (up from 3.30% on Oct. 1). Of 175 accounts, 29 raised, 6 cut, 140 held steady.
• Money markets: 3.45% median (+15 bps). High-yield checking medians rose to 4.00% (+7 bps).
• CDs: all 7 terms higher. Biggest median move = 18-month (+25 bps to 3.95%). 12-month median = 3.80%.
• Top HYSAs still pay up to ~4.27% (Peak) vs. a 0.65% national average — about 6×.
• Next Fed meeting: Oct. 28. Variable HYSAs may rise further if another hike lands; CDs lock today’s rate.
• Do this week: park emergency cash in a top FDIC/NCUA HYSA, ladder or lock CDs for money you won’t need for 12–24 months, and ignore promo teaser rates that require huge balances or linked checking you don’t want.

What moved from Oct. 1 to Oct. 18

ByTheMath rebuilds medians from the same set of products that were in its database before October began and were still live on Oct. 18. That makes the month-to-date comparison cleaner than mixing different banks each week. Here is the core table:

Account type	Oct. 1 median	Oct. 18 median	Change	Rose / fell / same	Sample
High-yield savings	3.30%	3.40%	+10 bps	29 / 6 / 140	175
Money market	3.31%	3.45%	+15 bps	44 / 0 / 106	150
High-yield checking	3.93%	4.00%	+7 bps	7 / 2 / 108	117
3-month CD	3.51%	3.55%	+4 bps	17 / 1 / 67	85
6-month CD	3.75%	3.80%	+5 bps	49 / 5 / 121	175
12-month CD	3.75%	3.80%	+5 bps	95 / 4 / 149	248
18-month CD	3.70%	3.95%	+25 bps	59 / 1 / 89	149
2-year CD	3.60%	3.70%	+10 bps	63 / 2 / 123	188
3-year CD	3.55%	3.70%	+15 bps	61 / 2 / 108	171
5-year CD	3.60%	3.75%	+15 bps	54 / 1 / 101	156

Source: ByTheMath, Savings rates in October 2026 (month to date as of Oct. 18). Same products on both dates. 1 basis point = 0.01 percentage point.

Same-product medians from Oct. 1 to Oct. 18, 2026: HYSA 3.30%→3.40%, money market 3.31%→3.45%, 12-month CD 3.75%→3.80%, 18-month CD 3.70%→3.95% (+25 bps). Data: ByTheMath. Chart: Dollar Lane (original).

Two patterns stand out. First, money markets outpaced HYSAs on the median (+15 vs. +10 bps), and zero of the 150 tracked MMAs cut their rate in the period. Second, CDs did most of the heavy lifting in raw change counts: 303 increases and 16 decreases across 315 CD products at 83 institutions. That fits a market where banks are competing for term deposits while still lifting liquid rates more cautiously.

The biggest individual CD movers were not the giant national brands. Bridge Credit Union’s 36-month CD jumped from 3.25% to 4.15% (+90 bps). Union Square Credit Union’s 24-month CD moved from 3.20% to 4.08% (+88 bps). Bridge also raised its 24-month and 18-month terms by 80 and 75 bps. Those are membership-restricted credit unions — useful as a signal that mid-tier institutions are bidding aggressively, less useful if you cannot join. Always confirm membership eligibility and NCUA insurance before you chase a headline CD.

For context on how this mid-month rebound fits the September hike story, see our earlier walkthrough of why savings rates started climbing again after the Fed. For locking today’s top CD coupons, use the Oct. 12 CD lock guide.

Top HYSAs vs. the 0.65% national average

Medians tell you where the middle of the high-yield market sits. The best accounts still pay roughly a full percentage point more than that middle — and about six times what the average U.S. savings account pays.

Per Bankrate (as of Oct. 18, 2026):

• Peak Bank — 4.27% APY, $100 minimum to open
• CIT Bank Platinum Savings — 4.25% APY (typically needs $5,000 for the top tier)
• Happen Bank, EverBank, Western State Bank — about 4.20% APY (terms differ; Happen often ties the top rate to monthly deposit activity)
• National average savings APY — 0.65%

NerdWallet’s list (updated ~Oct. 16) also highlights Peak at 4.27% for savers who want fewer hoops, and flags Axos’ promotional “up to 5% for six months” offer — which requires a linked Axos checking account plus average-balance and deposit thresholds, then falls back to about 4.21%. Teaser rates can be fine if you will meet the rules; they are a trap if you open the account for the headline and then miss the deposit requirements.

Our evergreen roundup of high-yield savings accounts for U.S. savers explains the features that matter beyond APY (fees, transfer speed, FDIC wording). Pair it with HYSA vs. CDs in 2026 when you are splitting emergency cash from goal money.

What $10,000 and $25,000 actually earn

Interest examples below assume a full year at a constant APY with no additional deposits — a simplification, because variable HYSAs can change and compounding schedules differ. Use them to feel the gap between a big-bank savings balance and a competitive online account.

Balance	At 0.65% (national avg.)	At 3.40% (Oct. 18 median HYSA)	At 4.27% (Peak-style top rate)
$10,000	~$65	~$340	~$427
$25,000	~$163	~$850	~$1,068

On $25,000, moving from the national average to a top HYSA is roughly an extra $900 a year before tax — more than many streaming and phone add-ons combined. Even moving only to the median HYSA (3.40%) still leaves you about $687 ahead of 0.65% on that same $25,000.

Interest on HYSAs, money markets and bank CDs is taxable as ordinary income on your federal return (and usually your state return). Keep 1099-INT forms when they arrive. For inflation-linked Treasury Series I bonds — a different product with purchase caps and a one-year lockup — see I bonds still pay 4.26% through Oct. 31 and how Series I bonds work for U.S. savers.

HYSA vs. money market vs. CD before the Oct. 28 Fed

The next Federal Open Market Committee decision is scheduled for Oct. 28, 2026 (Fed FOMC calendar). Markets will argue about another hike versus a pause. You do not need to forecast the Fed perfectly to place cash well. You need a clear job for each dollar.

On $25,000, the gap between a 0.65% average savings APY and a 4.27% top HYSA is roughly $900 a year before tax — before you even touch CD ladders. Photo: Kaboompics / Pexels (4475523), Pexels License.

High-yield savings (variable)

Best for: emergency funds and money you might need in days or weeks. APYs can rise after a Fed hike — which is what mid-October’s +10 bps median move already shows — but they can also fall later. Prioritize FDIC or NCUA insurance, no monthly fee, and transfer times you can live with. If your emergency fund still sits at 0.01% at a branch bank, moving it this week is the highest-ROI 20 minutes in personal finance right now.

Money market deposit accounts (variable)

ByTheMath’s Oct. 18 median MMA (3.45%) sits slightly above the median HYSA (3.40%). Some MMAs add check-writing or debit access; some charge fees or require higher balances. Treat “money market” carefully: a bank/credit-union deposit MMA is FDIC/NCUA-insured; a brokerage money market fund is not the same product. For this post we are talking about insured deposit MMAs tracked in the ByTheMath sample.

Certificates of deposit (fixed)

Best for: cash you will not need until the term ends. You lock today’s rate; if the Fed hikes again on Oct. 28 and liquid APYs rise, your CD will not automatically follow — but neither will it fall if rates peak and reverse later. Mid-October’s data says the 18-month sweet spot moved the most (+25 bps median). A simple ladder (for example 6 / 12 / 18 / 24 months) keeps some money rolling due each period. See how to build a CD ladder for U.S. savers and the fresher Oct. CD ladder lock guide. If you are comparing brokered vs. bank CDs, read brokered CDs vs. bank CDs.

A practical split before Oct. 28

• 3–6 months of expenses → top HYSA or insured MMA (liquidity first).
• Known bills in 6–24 months (tuition, wedding, car replacement) → CD ladder sized to those dates.
• Extra cash past the emergency fund with no date → still mostly HYSA/MMA until you have a goal; do not lock five years just because a long CD looks high on a rate board.
• Optional sleeve → Treasury bills via TreasuryDirect or a brokerage if you want government credit risk instead of bank risk; our T-bill primer for U.S. savers covers the basics. Also compare with when U.S. savers should choose HYSA vs. CD.

The contrast borrowers still feel

Savers are catching a bid. Mortgage borrowers are not. Freddie Mac’s Primary Mortgage Market Survey for the week of Oct. 15, 2026 left the 30-year fixed mortgage at 7.40% (unchanged) and the 15-year at 6.71% (Freddie Mac PMMS). A year earlier the 30-year averaged 6.27%. In plain English: parking cash at 4%+ is useful again, but it does not erase a near-three-year-high mortgage payment. That split — better deposit yields, still-expensive home loans — is exactly why optimizing the cash you already have matters more in late 2026 than waiting for housing costs to feel “normal.”

FDIC and NCUA: keep the boring safety rules

High APYs are only useful if the principal is protected. Prefer products from FDIC-insured banks or NCUA-insured credit unions. Standard coverage is $250,000 per depositor, per insured institution, per ownership category (FDIC deposit insurance). Joint accounts, certain trust and retirement ownership categories, and spreading balances across differently chartered banks can increase coverage — but only when structured correctly. Do not confuse marketing “partner network” language with automatic extra insurance; read the pass-through disclosure.

Before you wire five figures to a bank you discovered on a rate list:

• Confirm the legal bank name and FDIC certificate (or NCUA charter) on the regulator’s site.
• Check that the APY applies to your balance tier, not only to the first $1,000.
• Read early-withdrawal penalties on CDs and any monthly fee triggers on MMAs.
• Test a small transfer first if the bank is new to you.

Step-by-step: switch (or add) a HYSA this week

1. Write down the job for the money. Emergency fund, near-term goal, or CD ladder sleeve. Mixing jobs in one account is how people raid the wrong pile.
2. List your current APY and balance. If you are under 1%, you are almost certainly leaving cash on the table versus today’s medians and top rates.
3. Shortlist 2–3 FDIC/NCUA accounts. Compare APY, minimum to open, balance tiers, monthly fees, and how you move money (ACH only vs. ATM card).
4. Open the account online and link your existing checking. Use micro-deposits or instant verification. Save the disclosures PDF.
5. Move a test amount ($100–$500), then the rest. Keep enough in checking for upcoming bills plus a buffer for ACH timing (often 1–3 business days).
6. Turn on alerts for rate changes, low balance and large withdrawals.
7. If using CDs, ladder maturities and calendar the maturity dates so funds do not auto-renew into a worse term without your say. Details in our CD ladder lock guide.
8. Revisit after Oct. 28. If the Fed hikes again and your HYSA does not move within a couple of weeks, email support or shop again — loyalty rarely pays in online savings.

Pitfalls that erase the APY edge

1) Promo teaser rates

Axos-style “up to 5%” offers (per NerdWallet’s Oct. 16 notes) can require linked checking, average daily balances and monthly deposit thresholds, then step down after six months. Happen-style boosts may need a minimum monthly deposit to keep 4.20% instead of a lower base. Read the evaluation period rules before you celebrate the headline.

2) Balance tiers that punish small balances

CIT’s Platinum Savings illustrates the pattern: the top APY often needs $5,000+, while balances under the tier can earn far less (sometimes below the national average). If you cannot maintain the tier, pick a flatter APY schedule even if the “up to” number is slightly lower.

3) Transfer lag and “six withdrawal” myths

ACH transfers to a new online bank often take one to three business days. Plan so rent and card payments clear. Some banks still mention old Regulation D language about six “convenient” withdrawals per month; many no longer enforce a hard federal cap, but individual banks can still set limits or fees — check your deposit agreement.

4) Chasing credit-union CDs you cannot join

Bridge and Union Square’s double-digit basis-point jumps are real in ByTheMath’s change log, but membership rules matter. A 4.15% CD you cannot open is worth $0 to you. Prefer accounts you can fund this week.

5) Ignoring taxes and state differences

A 4.27% APY in a high-tax state is not the same after-tax as 4.27% in a no-income-tax state. Treasury interest has different state-tax treatment than bank interest. Run rough after-tax math if you are comparing T-bills, I bonds and HYSAs side by side.

6) Leaving the old account open “just in case” with a big balance

Keeping $20 at the old bank for history is fine. Keeping $20,000 there at 0.01% while you “get around to transferring” is an expensive habit. Automate the sweep.

How this fits the rest of your 2026 cash plan

Deposit rates are one lever. If you also hold I bonds, watch the Nov. 1 composite-rate reset and the Oct. 31 purchase timing notes in Buy I bonds before November 1, 2026. If mortgage rates stay near 7.40%, extra cash sometimes earns more in a HYSA/CD stack than as a tiny extra principal payment — especially if you lack an emergency fund — but that trade depends on your loan rate, tax situation and risk tolerance. When in doubt, fund the emergency HYSA first, then decide.

For a deeper HYSA feature checklist, return to high-yield savings accounts for U.S. savers. For the decision framework when rates are moving, use HYSA vs. CDs in 2026 and when to choose HYSA vs. CD.

Why medians matter more than one bank’s ad

Rate roundups are useful, but they can mislead if you only look at the single highest number on the page. A bank can sit at 4.27% for a week and then quietly slip while three dozen mid-tier banks lift from 3.20% to 3.50%. That second move is what changes outcomes for millions of savers who already hold “pretty good” accounts. ByTheMath’s design — same products on Oct. 1 and Oct. 18, medians across hundreds of accounts — is built to catch that market-wide shift.

The October data also shows that cuts still happen even in a rising month. Six of 175 HYSAs reduced their APY, and 16 CD products cut rates, including Barclays’ 9-month CD (4.15% → 4.00%) and Workers Credit Union’s 24-month CD (3.67% → 3.50%). A rising median is not a promise that your bank raised. If you have not checked your APY since summer, open the app today. Screenshots of last quarter’s rate do not pay this month’s interest.

Think of three layers of information:

• National average (0.65% on Bankrate’s savings measure): what the typical savings balance earns — still dominated by big-branch inertia.
• High-yield median (3.40% HYSA / 3.45% MMA): where competitive online and specialty products cluster after mid-October’s rebound.
• Top advertised tier (~4.20%–4.27%): the negotiation set for shoppers willing to open a new account and meet modest minimums.

Most households leave the most money on the table between layer one and layer two. Jumping from 0.65% to 3.40% on $25,000 is about $687 a year. Jumping further from 3.40% to 4.27% adds about another $218. Both steps matter; the first step is usually larger.

Fed hike mechanics: why cash yields lag (and then catch up)

When the FOMC raises the federal funds target range, banks’ wholesale funding costs and the interest they can earn on reserves tend to rise. Online banks that compete primarily on deposit share often reprice savings and CDs within days or weeks. Large branch banks often move slower on the deposit side because sticky checking relationships and fee income reduce the need to pay up for balances.

September’s hike to 3.75%–4.00% was the first increase since 2023 after a long stretch of cuts and holds. NerdWallet’s banking desk noted that after Sept. 16, most accounts on its best-HYSA list raised rates, with only limited exceptions. ByTheMath’s Oct. 1–18 window captures the follow-through: more increases than decreases, CD books adjusting fastest, and liquid medians grinding higher. That is the “savers finally catching a bid” phase — not a guarantee of a multi-year bull market in APYs.

What Oct. 28 could mean in practice:

• If the Fed hikes again: variable HYSA/MMA APYs often edge up over the following weeks; new CD specials may reprice higher, which can make waiting a few days rational for money you were about to lock for 12+ months — unless you already see a standout CD you are happy to own.
• If the Fed pauses: liquid rates may stabilize near today’s levels; CD specials can still move on bank-level funding needs. A pause is not automatically a signal to flee CDs.
• If communication turns hawkish or dovish: markets will reprice longer yields first; deposit betas (how much of a Fed move banks pass to customers) vary by institution. Your checklist should still be product rules and FDIC status, not a single futures contract.

None of that requires you to trade the FOMC like a hedge fund. It does argue against parking a large idle balance at 0.01% “until things settle.” Things rarely settle on a schedule that matches your rent day.

Worked example: $40,000 cash in three buckets

Suppose you have $40,000 outside retirement accounts after a bonus or home sale leftover:

• $18,000 emergency fund → Peak-style HYSA at 4.27% (or any fee-free 4%+ FDIC account you prefer). Rough annual interest if the rate held steady: about $769. At the 3.40% median: about $612. At 0.65%: about $117.
• $12,000 car replacement in ~18 months → 18-month CD near the new median (3.95%) or a better special you can actually open. Locking removes reinvestment risk for that sleeve. Early-withdrawal penalties apply if plans change.
• $10,000 flexible goal money → insured MMA or HYSA so you can fund a wedding deposit or house project without breaking a CD. Compare the Oct. 18 MMA median (3.45%) with your HYSA offer; pick the better net after fees and transfer convenience.

That structure survives either a hike or a pause on Oct. 28 better than an all-or-nothing bet on one product. It also mirrors the decision tree in our HYSA vs. CD guide: liquidity for shocks, locks for dated goals.

Checklist before you click “open account”

• FDIC or NCUA logo and matching legal name on the regulator lookup.
• APY effective date and whether it is variable (HYSA/MMA) or fixed (CD).
• Minimum to open and minimum to earn the advertised APY.
• Monthly fee and waiver rules.
• Outgoing ACH or wire fees; paper-statement fees.
• CD early-withdrawal penalty in days of interest.
• Funding deadline for any promo APY or bonus.
• How interest is compounded and credited (daily/monthly matters a little; fees and tiers matter more).
• Whether the bank shares deposits across a network and how insurance is disclosed.
• Your own calendar: do not initiate a large transfer the day before an autopay batch.

Bottom line

As of Oct. 18, 2026, ByTheMath’s mid-month read shows a real savings-rate rebound: median HYSA 3.40%, money markets 3.45%, and 18-month CD medians up a full 25 bps to 3.95%, with 353 APY increases vs. 22 cuts across the tracked universe. Top HYSAs still advertise around 4.20%–4.27% against a 0.65% national average — roughly six times more interest on the same balance. The Fed meets again on Oct. 28; variable accounts may climb further if another hike lands, while CDs lock what you can get today. Put emergency cash in a fee-free FDIC/NCUA HYSA or insured MMA, ladder CDs for dated goals, skip teaser rates you will not qualify for, and confirm every APY on the bank’s own site before you move a dollar.