Security State Bank of Marine savings, CD and money market rates
Security State Bank of Marine advertises 0.10% APY on its Passbook Savings account. That is 0.27 percentage points below the national savings average of 0.37% (FDIC, Sep 2026).
Ranked #2152 of 2767 tracked savings rates by advertised APY. For a $10,000 balance it would rank #2015. It was #173 three months ago.
Estimate your earnings·What Security State Bank of Marine actually pays
Security State Bank of Marine at a glance
| Savings | |
|---|---|
| Top savings APY | 0.10% · Passbook Savings |
| Minimum to open | not stated · Passbook Savings |
| Against the national average | 0.27 percentage points below the 0.37% FDIC savings average (Sep 2026) |
| CDs | |
| Top CD APY | 1.00% · 60-72 months · CD 60 - 72 months |
| Minimum to open | $300 · 60-72 months CD |
| Against the national average | 0.38 percentage points below the 1.38% FDIC 60-month CD average (Sep 2026) |
| Money market | |
| Top money market APY | Up to 3.56% · Money Market Platinum · needs at least $500,000 |
| Minimum to open | not stated · Money Market Platinum |
| Against the national average | 2.93 percentage points above the 0.63% FDIC money market average (Sep 2026) |
| FDIC certificate | 10163 · Marine On St. Croix, MN |
|---|---|
| Website | www.themarinebank.com |
| Branches | 4 branches in MN |
| Availability | Available in MN |
Security State Bank of Marine savings, CD and money market rates
How the rate applies
How the rate applies
Rates are APY. The national savings average is 0.37% (FDIC, Sep 2026). The top tracked savings rate on Banksparency is 5.50%. Across 60 savings accounts from 59 banks in the Banksparency core savings index, the median advertised rate is 3.66%, and one account in ten advertises 4.16% or more. See the highest savings rates.
Security State Bank of Marine CD rates
| Term | APY | Minimum | Product |
|---|---|---|---|
| 1-5 months | 0.15% | $1,000 | CD 32 - 181 days |
| 6-11 months | 0.25% | $1,000 | CD 6 - 11 months |
| 12-17 months | 0.40% | $300 | CD 12 - 17 months |
| 18-29 months | 0.45% | $300 | CD 18 - 29 months |
| 30-47 months | 0.50% | $300 | CD 30 - 47 months |
| 48-59 months | 0.70% | $300 | CD 48 - 59 months |
| 60-72 months | 1.00% | $300 | CD 60 - 72 months |
Interactive Tool
Calculate Savings for Security State Bank of Marine
All calculations are based on APY.
Savings Breakdown
- Interest Earned+$37.30(0.3%)
- Total Contributions$13,000
- Initial Deposit$1,000
Projected Balance
$14,037.30
The Banksparency Savings Calculator provides estimated savings growth based on user input and our latest data.
What Security State Bank of Marine pays on deposits
FDIC call report data
An advertised rate tells you what a new savings account earns today. It cannot tell you how the bank has priced the savings and money market deposits it already holds, over time. This section shows that. The figure is computed from the interest expense and deposit balances that every bank files with the FDIC in the same form. That is what makes it comparable across banks and across quarters.
The two figures answer different questions, so they sit side by side and are not combined.
In Q2 2026, Security State Bank of Marine paid a higher average rate on savings and money market deposits than 47% of banks that reported a figure (FDIC call report). The all-bank median was 1.45%.
- Security State Bank of Marine, savings and money market
- All-bank median
How to read these figures
What the average covers. It is an average across the whole bank, taken from its own quarterly FDIC call report. It covers savings accounts and money market deposit accounts, personal and business, at every balance tier. It also covers accounts that were opened years ago and keep the rate of those years. The FDIC line does not separate consumer accounts.
The second figure. The scale row also shows the average across all interest-bearing deposits: savings, interest checking, money market accounts, CDs, personal and business. That figure covers the whole deposit book. The two are shown separately and are not combined.
What the advertised rate covers. It is the rate that this bank advertises now for a new savings account. Banksparency records it from the bank's website on the date shown beside it.
Why the two differ. They measure different things, so this page shows them side by side and keeps them apart. An advertised rate applies to one account, opened now, at today's price. The average also includes older savings balances at the rates of earlier years, money market balances that were priced in a different rate environment, and business accounts. An average below an advertised rate is the usual result of that arithmetic. On its own it is not evidence about the account that you would open.
What the average is useful for. The bank files the data itself, under reporting instructions that are the same for every filer, and the same computation runs for every bank on this site. That makes it comparable in a way that an advertisement is not. Two things on this page read it: the percentile, which shows where the quarter sits among all filers, and the chart, which shows the direction the figure has moved across quarters.
What the average cannot tell you. It cannot tell you the rate that you would earn. No single customer earns the average. For your rate, read the advertised rate above and the rate tables on this page, each with the date it was observed.
What to do next. Use the advertised rate to work out what a new account earns. Use the chart to see how the quarterly average has moved against the all-bank median. Then compare the advertised rate against the current rates on the savings-rate tables before you open an account.
Definitions: Call Report · Rate Paid on Deposits · Interest-Bearing Deposits · Front Book and Back Book · Deposit Rate Percentile
Average annualized rates paid on savings and money market deposits, and on all interest-bearing deposits, quarterly. The FDIC line for savings includes money market deposit accounts and business savings deposits and does not separate consumer accounts. Source: FDIC call report data, as reported; it may be amended. The percentile compares all FDIC filers, count-weighted. A missing quarter is suppressed, never interpolated. The percentile counts the banks that paid strictly less on savings and money market deposits, one vote per bank, among the banks that reported a figure for the quarter.
So what is the catch?
| Product | APY | Min to open | Min to earn | Balance cap | Monthly fee | Requirements | Rate type | 12-mo trend |
|---|---|---|---|---|---|---|---|---|
| Super Savers | 0.10% | not stated | $0 | None | not stated | not stated | One rate | |
| Piggy Bank Savers | 0.10% | not stated | $0 | None | not stated | not stated | One rate | |
| Passbook Savings | 0.10% | not stated | $0 | None | not stated | not stated | One rate | |
| Money Market Platinum | 3.56% | not stated | $0 | None | not stated | not stated | Tiered | |
| Money Market Savings | 0.15% | not stated | $0 | None | not stated | not stated | Tiered |
Rate type: one rate applies at every balance. A tiered rate changes with your balance. A promotional rate changes after the period shown. A balance cap is the largest balance the highest rate applies to.
The 12-month trend shows the highest advertised rate observed each day and includes promotional tiers where one applied.
CDs
| Product | Term | APY | Min to open | Early withdrawal fee | Compounding |
|---|---|---|---|---|---|
| CD 32 - 181 days | 1-5 months | 0.15% | $1,000 | not stated | not stated |
| CD 6 - 11 months | 6-11 months | 0.25% | $1,000 | not stated | not stated |
| CD 12 - 17 months | 12-17 months | 0.40% | $300 | not stated | not stated |
| CD 18 - 29 months | 18-29 months | 0.45% | $300 | not stated | not stated |
| CD 30 - 47 months | 30-47 months | 0.50% | $300 | not stated | not stated |
| CD 48 - 59 months | 48-59 months | 0.70% | $300 | not stated | not stated |
| CD 60 - 72 months | 60-72 months | 1.00% | $300 | not stated | not stated |
Opening and using the account
| Availability | Available in MN |
|---|---|
| Footprint | 4 branches in MN |
| App Store rating | 4.8 out of 5 |
| Google Play rating | 4.9 out of 5 |
| Eligibility | not stated |
How Security State Bank of Marine behaves over time
Every observation of the advertised Passbook Savings rate in the last 12 months was 0.10% (observed through Oct 2, 2026). The series includes promotional tiers where one applied.
Banksparency observed no cuts to Security State Bank of Marine's advertised savings rate in the last 12 months, a period with 2 Federal Reserve cuts.
Recent rate changes, as observed
- Obs. Aug 1, 2026Piggy Bank SaversCut:0.15%to0.10%
- Obs. Jul 27, 2026Piggy Bank SaversRaise:0.10%to0.15%
- Passbook Savings
- The same as 90 days ago.
- 60-72 months CD
- The same as 90 days ago.
- Money Market Platinum
- The same as 90 days ago.
$10,000 at the 0.10% APY Security State Bank of Marine advertises on Passbook Savings grows to $10,010 in a year. Prices rose 3.4% in the year to August 2026 (Consumer Price Index (CPI)). After a year of prices rising at that pace, it buys as much as $9,681 does today. See how the federal funds rate shapes savings rates.
Security State Bank of Marine CD rates over time
Who is Security State Bank of Marine?
| Headquarters | Marine On St. Croix, MN |
|---|---|
| Founded | 1919 |
| Scale | $233M assets · $206M deposits, $142M of it interest-bearing (Q2 2026, FDIC) |
| Deposit insurance | FDIC insured · Certificate 10163 |
| Charter state | Minnesota · one of 223 insured banks chartered there (Q2 2026, FDIC) |
| Size | 2,737th-largest by deposits of 4,238 insured banks (Q2 2026, FDIC) |
| Deposit growth | Higher than at 38% of 4,226 insured banks over the four quarters to Q2 2026 (FDIC) |
Financial detail is in What Security State Bank of Marine pays on deposits above.
Common questions about Security State Bank of Marine
Is Security State Bank of Marine FDIC insured?
Yes. Security State Bank of Marine is FDIC insured under certificate 10163, so deposits are covered up to $250,000 per depositor, per ownership category.
Does Security State Bank of Marine have branches?
Yes. Security State Bank of Marine operates 4 branches according to FDIC branch records, in addition to its website and mobile apps.
Security State Bank of Marine against its closest alternatives
| Bank | Savings APY | Rate paid on savings and money market deposits (Q2 2026) | Min deposit | Branches |
|---|---|---|---|---|
| Security State Bank of Marine | 0.10% | 1.37% | not stated | 4 branches in MN |
| Alliance Bank | 0.10% | 1.33% | $300 | 7 branches in IN |
| Andover State Bank | 0.10% | 2.23% | not stated | 2 branches in KS |
| Argentine Federal Savings | 0.10% | 1.99% | $50 | 2 branches in KS |
Each savings APY is the top rate of the account the bank's own page leads with. Alternatives are the three tracked banks whose savings APY is closest to Security State Bank of Marine's.
Similar banks and related pages
Banks in the same rate band with the same product mix:
Other banks chartered in Minnesota, nearest to Security State Bank of Marine in deposits:
Rate hubs: today's highest savings rates, CD rates by term, and money market rates.
State pages: banks in Minnesota.