Compare Savings vs. CDs
Comparison of Deposit Account from Needham Bank with 3.40% - November 2025


Long-Term Analysis of Dedham Institution for Savings with 4.50% APY and Needham Bank with 3.40% APY and Bluestone Bank with 3.75% APY

This analysis is for demonstrative purposes only. Savings rates may go up or down, and CD rates may not be renewable for the length of the term of the analysis.

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$
PRODUCT
BANK
APY
STATE
AMOUNT
TERM
BANK TYPE
VS.NAT.AV.
MIN
  • 1
    LOCAL CD
    4.50%
    -
    $50,000
    12 Month
    Bank
    8.20x (National Avg. - 0.55%)
    $1,000
     
    SCENARIO
    Year Rate
    4.50%
    Annual
    Interest
    Annual Interest
    (After Tax)
    1 50,000 2,250 1,575
    2 52,250 2,351 1,646
    3 54,601 2,457 1,720
    4 57,058 2,568 1,797
    5 59,626 2,683 1,878
    6 62,309 2,804 1,963
    7 65,113 2,930 2,051
    8 68,043 3,062 2,143
    9 71,105 3,200 2,240
    10 74,305 3,344 2,341
    11 77,648 3,494 2,446
    12 81,143 3,651 2,556
    13 84,794 3,816 2,671
    14 88,610 3,987 2,791
    15 92,597 4,167 2,917
    16 96,764 4,354 3,048
    17 101,119 4,550 3,185
    18 105,669 4,755 3,329
    19 110,424 4,969 3,478
    20 115,393 5,193 3,635
    TOTAL $70,586 $49,410
  • 2
    LOCAL CD
    3.40%
    -
    $50,000
    18 Month
    Bank
    5.87x (National Avg. - 0.58%)
    $1,000
     
    SCENARIO
    Year Rate
    3.40%
    Annual
    Interest
    Annual Interest
    (After Tax)
    1 50,000 1,700 1,190
    2 51,700 1,758 1,230
    3 53,458 1,818 1,272
    4 55,275 1,879 1,316
    5 57,155 1,943 1,360
    6 59,098 2,009 1,407
    7 61,107 2,078 1,454
    8 63,185 2,148 1,504
    9 65,333 2,221 1,555
    10 67,555 2,297 1,608
    11 69,851 2,375 1,662
    12 72,226 2,456 1,719
    13 74,682 2,539 1,777
    14 77,221 2,626 1,838
    15 79,847 2,715 1,900
    16 82,562 2,807 1,965
    17 85,369 2,903 2,032
    18 88,271 3,001 2,101
    19 91,272 3,103 2,172
    20 94,376 3,209 2,246
    TOTAL $47,584 $33,309
  • 3
    LOCAL CD
    3.75%
    -
    $50,000
    24 Month
    Bank
    5.68x (National Avg. - 0.66%)
    $2,000
     
    SCENARIO
    Year Rate
    3.75%
    Annual
    Interest
    Annual Interest
    (After Tax)
    1 50,000 1,875 1,313
    2 51,875 1,945 1,362
    3 53,820 2,018 1,413
    4 55,839 2,094 1,466
    5 57,933 2,172 1,521
    6 60,105 2,254 1,578
    7 62,359 2,338 1,637
    8 64,697 2,426 1,698
    9 67,124 2,517 1,762
    10 69,641 2,612 1,828
    11 72,252 2,709 1,897
    12 74,962 2,811 1,968
    13 77,773 2,916 2,042
    14 80,689 3,026 2,118
    15 83,715 3,139 2,198
    16 86,854 3,257 2,280
    17 90,111 3,379 2,365
    18 93,491 3,506 2,454
    19 96,996 3,637 2,546
    20 100,634 3,774 2,642
    TOTAL $54,408 $38,085

    All calculations are for demonstration purposes only.

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