Automates multi-party loan payment processing
An automated loan management platform that tracks, calculates, and processes multi-party payments from creation to final settlement.
Next JS
Django
PostgreSQL
Celery
Redis
Stripe
AWS EC2
Vercel
AWS
What is Mr. Seller Note?
Mr Seller Note is a fintech platform for tracking loans end to end. It splits principal and interest per installment, records payments, tracks balances, and runs Stripe transfers.
The Problem
Private lending is often managed through spreadsheets and manual calculations, creating gaps in accuracy, consistency, and visibility across all parties. Interest and principal are calculated by hand with no reliable way to track balances, payments have to be initiated and recorded manually, and receipts and loan data live in disconnected places.
Our Solution
Arithmiks built a centralized loan management platform that transformed manual, fragmented lending workflows into an automated, multi-party payment experience.
Loan Creation and Multi-Party Onboarding
A seller or borrower creates a loan and invites the other party. The loan stays inactive until both accept and add payment methods, with onboarding states visible to all.
Automated Payment Processing via Stripe
Stripe Connect handles scheduled collection including ACH. Once a loan is active, payments process automatically and distribute across parties, commissions, and fees.
Referral and Commission System
A third party can initiate a loan by inviting both seller and borrower. The system tracks referral participation, Stripe status, and commissions earned per payment.
Key Features
1. Loan Creation and Email Invitation:
Structured flow to create a loan and invite the other party—tracks onboarding states, visible to all involved.
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