How P2P lending should be evaluated
P2P lending returns are often presented as a simple interest rate, but the real outcome depends on platform fees, borrower defaults, recovery rates and reinvestment assumptions. The correct question is not the advertised coupon. It is the net return after capital friction and credit loss.
For investors, defaults matter more than headline yield once credit quality deteriorates. For borrowers, the key issue is the real monthly repayment burden and total cost under the chosen repayment structure. For portfolio builders, diversification helps reduce concentration risk, but it does not eliminate credit losses.
A good P2P calculator must therefore show gross return, fee drag, default loss and effective yield together, instead of hiding the erosion inside one blended number.
Core formulas
Gross Interest = Principal × Rate × (Term / 12)
Platform Fee = Gross Interest × Fee %
Default Loss = Principal × Default % × (1 − Recovery %)
Net Profit = Gross Interest − Platform Fee − Default Loss
Effective Yield = Net Profit ÷ Principal × 100
Borrower annuity payment = P × r ÷ (1 − (1+r)^-n)
This calculator provides a structured economic estimate. Actual platform servicing rules, tax treatment and timing of defaults can differ.
What changes the result most
| Factor | Investor effect | Borrower effect | Why it matters |
|---|
| Interest rate | Raises gross return | Raises repayment cost | Core pricing driver |
| Default rate | Directly erodes capital | Indirect market stress signal | Main risk variable |
| Recovery rate | Offsets loss severity | Usually irrelevant to performing borrower | Reduces default damage |
| Platform fee | Compresses net yield | Can raise all-in cost | Friction that lowers efficiency |
| Diversification | Reduces concentration risk | Not relevant | Portfolio stability lever |
Frequently Asked Questions
What is P2P lending?+
P2P lending matches borrowers and investors through a platform. Investors provide capital and earn interest. Borrowers receive loans outside a traditional bank structure.
Why is the advertised yield not the real yield?+
Because the advertised yield usually ignores fee drag, defaults, recoveries and sometimes idle cash. Net yield after losses is the number that matters.
How does default risk affect returns?+
Defaults directly damage principal. Even a high coupon can become unattractive if the default rate is elevated and recovery on failed loans is low.
Does diversification remove risk?+
No. Diversification reduces concentration risk and smooths borrower-specific failure, but it does not remove platform-wide or macro credit risk.
What repayment type is best for borrowers?+
Annuity repayment provides predictable blended payments. Interest-only lowers the current payment but leaves principal outstanding longer. Bullet structures concentrate repayment at the end and carry the highest refinancing pressure.
When does P2P lending become unattractive?+
It becomes unattractive when defaults, poor recovery and fees compress net yield to a low single digit level or below inflation, especially after considering platform and liquidity risk.