Subscribe
Logo
Logo
  • Topics Icon Topics
    • AI Icon AI
    • Banking Icon Banking
    • Blockchain/DeFi Icon Blockchain/DeFi
    • Embedded Finance Icon Embedded Finance
    • Fraud/Identity Icon Fraud/Identity
    • Investing Icon Investing
    • Lending Icon Lending
    • Payments Icon Payments
    • Regulation Icon Regulation
    • Startups Icon Startups
  • Podcasts Icon Podcasts
  • Products Icon Products
    • Webinars Icon Webinars
    • White Papers Icon White Papers
  • TechWire Icon TechWire
  • Search
  • Subscribe
Reading
Do You Understand How Interest is Calculated on P2P Loans?
ShareTweet
Home
News Roundup
Do You Understand How Interest is Calculated on P2P Loans?

Do You Understand How Interest is Calculated on P2P Loans?

Peter Renton·
News Roundup
·Sep. 12, 2012·1 min read

Most people think they understand how interest works. You invest $100 at 10% then your annual interest payment is $10 a year. If you are investing for a fixed term, say three years, that will mean $30 in total interest payments. Simple math.

But with p2p lending it is different. This same $100 invested in a 36-month p2p loan at 10% will get you far less interest than $30. If we compare apples to apples and assume no service fees then this $100 investment will net you around $16.15 in interest, close to half the interest from the previous example. What gives?

P2P Loans Are Amortized

Are you really getting just over 5% or so annually on your money? No. The reason the total interest is less is because you are investing in a fully amortized loan. What this means is that with each payment you are being paid back some principal as well as interest.

Let’s continue our example to demonstrate. The monthly payment for your $100 loan at 10% is $3.23. Given a standard amortization schedule the first payment is split into $2.39 of principal and $0.83 of interest. So, your $100 investment has been paid down by $2.39 and the principal balance is now $97.61. S0, next month you will not receive interest on $100, you will receive interest on $97.61. Herein lies the big difference with amortized loans.

Below is the full amortization schedule for a $100 loan at 10%. Now, keep in mind I am ignoring service fees in this example – in reality at Lending Club and Prosper  a 1% service fee is deducted with each payment.

I hope this is clear for everyone. I have seen many new investors get confused about interest payments in p2p lending. Let me know if you have any questions or comments.

[table id=33 /]

 

  • Peter Renton
    Peter Renton

    Peter Renton cofounded Fintech Nexus as the world’s largest digital media company focused on fintech before it was acquired by Command. Peter has been writing about fintech since 2010 and he is the author and creator of the Fintech One-on-One Podcast, the first and longest-running fintech interview series.

    View all posts
Tags
amortizationinterestinvesting
Related

Stash announces new B2B offering called StashWorks

Liza Landsman, CEO of Stash on creating financial opportunity

Anish Dhanjee writes his ideas for EqualSeat on a white board

EXCLUSIVE: Creating an Equal Seat at the Investment Table

Fintech One-on-One: Sarah Levy of Betterment

Popular Posts

Today:

  • FUTURE NEXUS IMAGE TEMPLATES!! (2)OCC Hints at Trouble for Charters Jun. 18, 2026
  • 2026 US Employees Added (1)Banking on Trust in a Tightening Economy Jul. 2, 2026

This month:

  • FUTURE NEXUS IMAGE TEMPLATES!! (2)OCC Hints at Trouble for Charters Jun. 18, 2026
  • Dr. Devi Parikh“Too heavy of a hammer”: How Yutori is beating AI giants at building the web’s future Sep. 10, 2026
  • Santiago SuarezInside Addi’s mission to build a fairer financial system in Colombia Feb. 19, 2026
  • Ryan WigginsMercury’s Ryan Wiggins on Building Customer Trust: Lessons from a Decade at Facebook and WhatsApp Jul. 2, 2026
  • Dr. Jean NehmeHardware as a durable moat & the former surgeon’s bet on “soft robotic cells” Aug. 27, 2026
  • Ram PalaniappanIn 2026, Your Wages Should Not Be On a Two-Week Delay Aug. 20, 2026
  • TitoEscaping the demo: The founders building the foundation for medtech physical AI Jul. 23, 2026
  • Ethan ChanAllium CEO Ethan Chan on making blockchain data usable Sep. 3, 2026
  • 197Renton’s Take on Loan Model Risks Nov. 4, 2025
  • Funded – 6/26/26Funded: Attention raises $30M as AI sales software shifts from note-taking to action Jun. 26, 2026

More News
  • About
  • Contact
  • Disclaimer
  • Privacy Policy
  • Terms
Subscribe
Copyright © 2026 Fintech Nexus
  • Topics
    • AI
    • Banking
    • Blockchain/DeFi
    • Embedded Finance
    • Fraud/Identity
    • Investing
    • Lending
    • Payments
    • Regulation
    • Startups
  • Podcasts
  • Products
    • Webinars
    • White Papers
  • TechWire
  • Contact Us
Start typing to see results or hit ESC to close
lis digital banking USA Lending Club UK
See all results