LedgerPay

Track invoices and generate monthly payment PDFs in seconds.

LedgerPay is a lightweight billing tracker for freelancers, agencies, and small service businesses that need to upload client bills, record payment status, and generate a clean month-end PDF summary. It helps users see who paid, who still owes money, and exactly how much outstanding revenue remains without manual spreadsheet work.

Business Goals

  • Reach 1,000 monthly active users within 6 months of launch.
  • Convert at least 18% of free users to paid plans within 90 days of signup.
  • Reduce month-end billing reconciliation time by 70% for active users within 3 months.
  • Maintain monthly churn below 5% for paid accounts by month 6.

User Goals

  • Upload bills quickly with client name, amount, and payment status in under 30 seconds per bill.
  • See a monthly list of paid and unpaid clients with total outstanding amount.
  • Generate and download a polished PDF summary at month end.
  • Avoid spreadsheet errors by keeping one source of truth for bill status.

Non-Goals

  • This product will not process online payments or act as a payment gateway.
  • This product will not replace full accounting software such as QuickBooks or Xero.
  • This product will not manage tax filing, invoicing automation, or expense tracking beyond bill payment status.
  • This product will not support complex multi-currency accounting in the MVP.

Freelancer Amina, 34 - Amina bills a handful of clients each month and currently tracks payments in spreadsheets and chat messages. She needs a simple way to know who has paid and export a professional month-end summary.

Freelancer Amina, 34

  • As a freelancer, I want to upload a client bill with an amount and payment status, so that I can keep my records organized.
  • As a freelancer, I want to see all unpaid bills at the end of the month, so that I know exactly what to follow up on.
  • As a freelancer, I want to generate a PDF summary for my records, so that I can share or archive it quickly.

Agency Owner Daniel, 45 - Daniel manages several clients and has staff sending reminders manually. He wants a single view of outstanding balances to reduce missed follow-ups and improve cash flow.

Agency Owner Daniel, 45

  • As an agency owner, I want to filter bills by month and client, so that I can review collections efficiently.
  • As an agency owner, I want the PDF to separate paid and unpaid items, so that I can send a clear statement to my team or accountant.
  • As an agency owner, I want totals for outstanding amounts, so that I can prioritize collection efforts.

Office Admin Priya, 29 - Priya supports billing operations and needs accuracy and speed. She is responsible for updating payment status and preparing reports for leadership.

Office Admin Priya, 29

  • As an admin, I want to edit a bill when payment status changes, so that the report reflects the latest truth.
  • As an admin, I want validation on amounts and bill details, so that bad data does not break the report.
  • As an admin, I want downloadable PDFs that are consistent in format, so that monthly reporting looks professional.

Bill Upload and Record Creation · High priority

  • Users must be able to create billing records manually or via file upload with the minimum fields needed to produce accurate monthly summaries.
  • Capture client name, bill reference, amount, bill date, due date, payment status, and optional notes.
  • Support manual entry through a form and bulk import through CSV in the MVP.
  • Validate amount as a positive numeric value and reject missing client or month information.
  • Allow editing and deletion of records with audit-safe confirmation.
  • Store records under a month and year for easy end-of-month reporting.

Payment Status Tracking · High priority

  • The product must clearly distinguish paid and unpaid bills and compute outstanding totals automatically.
  • Support status values of Paid, Unpaid, and Partially Paid in the data model.
  • Calculate outstanding amount as total billed minus any amount paid.
  • Allow users to update payment status after a bill is created.
  • Flag overdue unpaid bills based on due date and current date.
  • Recompute monthly summary totals instantly when a record changes.

Monthly PDF Generation · High priority

  • Users need a month-end PDF that lists paid clients, unpaid clients, and total outstanding amount in a professional format.
  • Generate PDFs for a selected month and year with a summary header and grouped sections for paid and unpaid bills.
  • Include totals for billed amount, paid amount, and outstanding amount.
  • Render the PDF with company name, generation date, and page numbers.
  • Allow download and print from web and mobile browsers.
  • Handle empty months with a clear no-records message in the PDF.

Search, Filter, and Review · Medium priority

  • Users need simple navigation to review bills by client, month, and status before exporting reports.
  • Filter by month, status, client name, and outstanding amount range.
  • Provide a searchable table with sort by amount, date, and status.
  • Show a live summary panel with paid count, unpaid count, and total outstanding.
  • Persist the last used filters for returning users.
  • Support pagination for larger bill lists.

Authentication and Data Management · Medium priority

  • The application must keep billing data secure and accessible to the right account holders.
  • Support email/password login and password reset in MVP.
  • Associate all bills with a workspace or account owner.
  • Provide role separation for owner and staff editor permissions.
  • Log report generation and critical edits for basic auditability.
  • Back up data daily and allow export of all records as CSV.

Fast First Bill Setup

  • Sign up with email in under 1 minute.
  • Create a workspace with business name and default currency.
  • Add the first bill manually or upload a CSV file.
  • Mark payment status and save the record.
  • Generate the first monthly PDF within 2 minutes of signup target time-to-value.

1. Create or Import Bills

  • The user enters billing records one by one or imports a CSV of existing month data.
  • Show a simple form with client name, amount, status, date, and notes.
  • Validate required fields immediately and highlight errors inline.
  • On CSV import, map columns before upload and report row-level errors.

2. Review Monthly Ledger

  • The user lands on a table view showing all bills for the selected month.
  • Display status chips for paid, unpaid, and partially paid.
  • Show totals at the top for billed, paid, and outstanding amounts.
  • Support empty state guidance when no bills exist for the selected month.

3. Update Payment Status

  • The user marks bills as paid or adjusts amounts as payments come in.
  • Allow quick edit from table row or detail panel.
  • Recalculate outstanding balance instantly after edits.
  • Prevent negative amounts and warn if payment exceeds the billed amount.

4. Generate Month-End PDF

  • The user clicks generate to produce a clean PDF summary for the selected month.
  • Include separate sections for paid and unpaid clients with totals.
  • Provide preview before download to catch obvious mistakes.
  • If the month contains no data, generate a valid PDF with a clear empty report message.

5. Share and Archive

  • The user downloads or shares the PDF and keeps a record for later reference.
  • Store the generated report history by month and timestamp.
  • Allow re-download of previous PDFs without regeneration.
  • Support basic filename conventions like businessname_2026-06_summary.pdf.

Power Features and Edge Cases

  • Recurring bill templates for repeat monthly clients.
  • Bulk status updates for multiple bills at once.
  • Partial payment handling with outstanding balance calculation.
  • Multi-currency support with a single default currency per workspace.
  • Report branding with logo, business address, and custom footer.
  • Permission-based editing for teams with staff and owner roles.

Clean Reporting Interface

  • Large, readable summary cards for billed, paid, and outstanding totals.
  • Status colors that remain accessible with text labels and icons, not color alone.
  • Keyboard-friendly table navigation and form inputs for fast data entry.
  • Mobile-first responsive layout so month-end review works on phones.
  • Fast PDF preview loading under 2 seconds for typical month-sized datasets.

Amina finishes her month with bills scattered across email, chat, and a spreadsheet. She spends an hour checking who paid, who still owes, and how much is outstanding before she can send her summary to the client or keep it for her records.

With LedgerPay, she uploads each bill once, marks payment status as it changes, and filters by month in a single dashboard. At month end she generates a PDF that clearly separates paid and unpaid clients, shows the outstanding amount, and gives her a professional report in minutes instead of an afternoon.

That shift saves her time, reduces mistakes, and gives her a repeatable billing process. For the business, it means better retention because the product becomes part of the monthly workflow, not just a one-time tool.

User-Centric Metrics

  • 80% of active users generate a monthly PDF within 5 minutes of opening the app.
  • At least 90% of uploaded bills pass validation without support intervention.
  • Users reduce month-end reconciliation time from 60 minutes to under 20 minutes.
  • 95% of generated PDFs are downloaded successfully on the first attempt.
  • User satisfaction score of 4.5 out of 5 or higher after PDF generation flow.

Business Metrics

  • 25% of new signups return for a second month-end report within 30 days.
  • 18% trial-to-paid conversion within 90 days.
  • Monthly active user growth of 15% month-over-month for the first 6 months.
  • Paid account churn below 5% monthly by month 6.

Technical Metrics

  • 99.9% uptime for the web application.
  • PDF generation latency under 10 seconds for reports with up to 1,000 bills.
  • Zero critical security incidents and encrypted data at rest and in transit.
  • API p95 response time under 300 ms for dashboard and filter actions.

Tracking Plan

  • Track bill_created with amount, status, and upload source.
  • Track bill_updated with fields changed and reason if provided.
  • Track csv_import_completed with row count and error count.
  • Track report_generated with month, bill count, and generation duration.
  • Track report_downloaded with file type and device type.
  • Track filter_applied with status, month, and client filters used.
  • Track subscription_upgraded when a user moves from trial to paid.

Technical Needs

  • Frontend built with Next.js and React for fast dashboard rendering.
  • Backend API using Node.js with TypeScript and a REST or tRPC layer.
  • PostgreSQL for structured billing records and monthly summaries.
  • Background job queue such as BullMQ or Cloud Tasks for PDF generation.
  • PDF rendering via Playwright, Puppeteer, or a server-side PDF library.
  • Object storage such as AWS S3 for report files and exports.
  • Authentication using a managed provider like Auth0, Clerk, or Supabase Auth.

Integration Points

  • Google OAuth or email-based auth for account access.
  • Stripe for subscription billing and plan management.
  • AWS S3 or equivalent for generated PDF storage.
  • SendGrid or Postmark for report delivery and password reset emails.
  • Optional CSV import/export through standard spreadsheet formats.

Data Storage & Privacy

  • Store only necessary billing metadata and avoid collecting card or bank details.
  • Encrypt data in transit with TLS and at rest using managed cloud encryption.
  • Provide account-level data export and deletion to support GDPR and CCPA requests.
  • Log access and edits for accountability without exposing sensitive invoice contents in logs.
  • Set retention policies for generated reports and allow workspace admins to delete old PDFs.

Scalability & Performance

  • Use asynchronous jobs for PDF generation to avoid blocking the UI.
  • Cache monthly aggregates so summary cards load quickly even with large ledgers.
  • Paginate and server-filter bill tables for workspaces with thousands of records.
  • Use CDN delivery for downloadable PDF assets.

Potential Challenges

  • CSV imports may contain messy or inconsistent columns; mitigate with column mapping, sample templates, and row-level error reporting.
  • Users may enter partial or duplicate payments; mitigate with validation rules, duplicate detection, and an edit history.
  • PDF rendering can fail on large reports; mitigate with job retries, bounded report size, and fallback simpler formatting.
  • Month boundary confusion across time zones; mitigate with workspace timezone settings and explicit month selection.
  • Data privacy concerns around financial records; mitigate with encryption, access controls, and deletion/export tools.

Team & resourcing - Small team - 2 engineers, 1 designer, part-time PM, and shared QA support.

Phase 1: MVP Ledger · Weeks 1-4

  • Authentication and workspace setup
  • Manual bill entry form with validation
  • Monthly bill table with paid/unpaid status
  • Basic summary totals for billed, paid, and outstanding

Phase 2: PDF Reporting · Weeks 5-7

  • Month-end PDF generation
  • Download and report history
  • Paid and unpaid sections with totals
  • Empty-state PDF handling and preview

Phase 3: Import and Review Tools · Weeks 8-10

  • CSV import and export
  • Search, filter, and sort controls
  • Inline edit and bulk status updates
  • Overdue flagging based on due date

Phase 4: Launch Readiness · Weeks 11-12

  • Subscription billing with Stripe
  • Analytics event instrumentation
  • Security hardening and backup workflows
  • Performance tuning and accessibility pass

Paste this into Cursor, Bolt, Lovable, or v0 to start building.

Build a web app called LedgerPay for freelancers, agencies, and small businesses to upload bills, track whether each client has paid, and generate month-end PDF reports showing paid clients, unpaid clients, and total outstanding amount.

Core requirements:
Implement authentication, workspace setup, bill CRUD, CSV import, monthly filtering, payment status updates, and PDF generation/download.
Create a dashboard with summary cards for total billed, paid, and outstanding, plus a searchable/sortable table of bills.
PDF report must include business name, report month, generation date, grouped paid and unpaid sections, and totals.
Support paid, unpaid, and partially paid statuses with outstanding amount calculation.
Store generated PDFs and report history.

Primary screens:
Landing/sign-up, workspace setup, bills dashboard, add/edit bill modal or page, CSV import flow with column mapping, monthly report preview, report history, settings for timezone/currency/branding.

Data model:
User: id, email, name, role, workspaceId
Workspace: id, name, timezone, defaultCurrency, logoUrl, createdAt
Client: id, workspaceId, name, email optional
Bill: id, workspaceId, clientId, clientName snapshot, amount, amountPaid, status, billDate, dueDate, notes, month, year, createdAt, updatedAt
Report: id, workspaceId, month, year, pdfUrl, generatedAt, generatedByUserId, totals JSON
AuditEvent: id, workspaceId, actorUserId, type, metadata JSON, createdAt

Default stack:
Next.js 14 with React and TypeScript, Tailwind CSS, shadcn/ui, PostgreSQL with Prisma, Node.js API routes or tRPC, Clerk for auth, Stripe for billing, AWS S3 for file storage, BullMQ for background jobs, and Playwright or Puppeteer for PDF rendering.

Implementation details:
Use server-side validation for all bill inputs, inline error states in the UI, and optimistic updates for status edits.
Generate PDFs asynchronously and show job progress or completion toast.
Make the app responsive, accessible, and fast, with keyboard-friendly tables and clear empty states.
Include basic analytics event hooks for bill_created, bill_updated, csv_import_completed, report_generated, and report_downloaded.
Build the app so a user can create a workspace, add their first bill, and download a monthly report within 2 minutes.

Business Idea

I WANT TO UPLOAD A BILL FOR A CLIENT IT SHOULD BE UPLOADED WITH THE AMOUNT, WHETHER THEY PAID OR NOT, AT THE END OF THE MONTH. I NEED A PDF THAT SHOULD AUTOMATICALLY GENERATE A PDF WITH THOSE WHO PAID AND THOSE WHO DID NOT PAY WITH THE OUTSTANDING AMOUNT THAT I NEED

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