Double-entry ledger · Top-ups & transfers · QR & card payments · Licensed partner integration
Digital Wallet and E-Wallet App Development
Digital wallet apps with stored balances, top-ups, peer transfers, QR payments, cards and rewards, built on a double-entry ledger and integrated with licensed banking partners.
A wallet is a promise that the balance on screen is real. Every top-up, transfer, refund and fee has to land in the right place, even when networks fail halfway.
Codersarts digital wallet development builds wallets on a double-entry ledger, with the security and partner integrations a stored-value product needs.
What Is a Digital Wallet?
A digital wallet stores money or payment credentials so users can pay, receive and transfer funds from their phone. Closed-loop wallets work only within one business, such as store credit or in-app balances. Open or semi-closed wallets can pay other merchants and usually require a license or a licensed banking partner.
Wallet regulations, such as prepaid payment instrument rules in India or e-money rules in the EU, vary by country. Your legal advisers confirm the license or partner model; we build the product and integrations to match.
Who This Is For
Fintech startups launching a wallet
Marketplaces and platforms adding in-app balances
Retail and loyalty programs with store credit
Gaming and creator platforms with credits
Businesses offering employee or expense wallets
What We Build
Ledger and balances
Double-entry ledger as the single source of truth.
Top-ups and withdrawals
Cards, UPI and bank transfers. See payment gateway integration.
Transfers
Peer-to-peer and wallet-to-bank transfers with limits.
QR and merchant payments
Scan-to-pay and merchant settlement.
Cards
Virtual and physical cards through card-issuing partners.
Onboarding and limits
KYC tiers with limits per tier. See KYC and AML verification.
Security
Device binding, PIN and biometrics, transaction alerts and fraud rules.
Wallet Types Compared
Type | Used for | Regulatory weight |
|---|---|---|
Closed-loop | Credits within one business | Lowest |
Semi-closed | Paying a network of merchants | License or partner usually needed |
Open-loop | Cash withdrawal and wide acceptance | Bank or full license |
Common Wallet Problems We Fix
Problem | Usual cause | Fix |
|---|---|---|
Balances drift from transactions | Balance stored as a single number | |
Duplicate transfers on retry | No idempotency | |
Account takeovers | Weak authentication | |
Slow at peak | Database bottlenecks |
How Much Does a Digital Wallet Cost?
Cost depends on wallet type, partners, cards and compliance requirements.
Scope | Typical timeline | Typical cost |
|---|---|---|
Closed-loop wallet in an existing app | 4 to 8 weeks | $12,000 to $30,000 |
Wallet MVP with partner bank | 3 to 5 months | $50,000 to $120,000 |
Full wallet with cards and merchants | 6 to 10 months | $120,000 to $300,000+ |
What changes the cost: wallet type, partner integrations, card issuing, KYC tiers, merchant network, fraud controls and platforms.
Ranges are typical for a global team. Your price is fixed after scoping, before any work starts.
Ways to Start Small
Starting point | Best for | From |
|---|---|---|
Protecting accounts in an existing wallet | $199 | |
A ranked bug list for an existing platform | $199 | |
Ongoing fixes with a fixed budget | $290 for 10 hours |
How We Work
Model. Money flows, licenses and partners.
Design. Ledger, limits and user journeys.
Build. Ledger, top-ups, transfers and apps.
Integrate. Banking, KYC and card partners.
Test. Reconciliation, failures and security testing.
Launch. Monitoring, alerts and support.
What You Receive
A wallet app on iOS and Android
Double-entry ledger and reconciliation
Partner integrations
Security and fraud controls
Documentation and code ownership
Example Engagement: In-App Credits for a Marketplace
An illustrative example based on the pattern we see most often. Client details are kept confidential.
The situation: A services marketplace refunded customers by hand and wanted in-app credit instead.
What we did:
Built a closed-loop wallet on a double-entry ledger
Added top-ups, refunds to wallet and checkout with balance
Added daily reconciliation and admin tools
The result: Refunds became instant, repeat bookings rose and finance could trace every credit.
Mistakes to Avoid
Storing balance as a single editable number
Launching an open wallet without the right license or partner
No transaction limits
Ignoring failed and partial transfers
Why Codersarts
Payments, security, cloud and AI engineers in one team
Money movement designed for correctness, not just the happy path
Fixed-price tasks for small jobs, so you can start without a large contract
Plain-language documentation for partner and bank reviews
You own all code, data and accounts
Frequently Asked Questions
Do we need a license for a wallet?
Closed-loop wallets often don't; semi-closed and open wallets usually need a license or partner. Confirm with your legal advisers.
How do you keep balances accurate?
With a double-entry ledger and daily reconciliation.
Can the wallet issue cards?
Yes, through card-issuing partners.
How much does a wallet cost?
A closed-loop wallet typically costs $12,000 to $30,000; a wallet MVP with a partner bank $50,000 to $120,000.
Related Pages
Payment gateway integration: top-ups and payouts.
KYC and AML verification: onboarding.
Fintech solutions: every fintech service in one place.
Build a Wallet Users Can Trust
Tell us about your wallet model and markets, and we'll plan the right build.