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ERP.AI Invoicing & Billing System

Invoicing & Billing System

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Modules

Clients and estimatesAgree the work and payment terms before creating an invoice. Invoice preparationPrepare invoices with clear lines, due dates and a preserved document history. Recurring billingManage retainers and repeat invoices from an explicit billing schedule.
Payments and reconciliationConnect customer receipts to invoices and check their actual payment outcome. Billable workBring approved expenses and recorded time into the right customer invoice. Collections and reportingFollow up on outstanding invoices with the right customer context.

Invoicing & Billing System

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Processes

Estimate to invoiceCarry the customer’s accepted scope, prices and tax treatment into a supported invoice. Recurring billing to collectionRun repeat billing on the agreed schedule and follow each invoice through confirmed collection.
Receipt to reconciliationSee what was billed, what has actually been collected and which balances still need follow-up. Billable work to invoiceTurn recorded time and reimbursable expenses into an invoice your customer can trace back to the work.

Invoicing & Billing System

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Pricing Questions and answers Get started
Build with Proto

Industries

Professional servicesConsultancies and independent specialists billing agreed work and reimbursable expenses. Retainer businessesAgencies and service providers invoicing repeat commitments.
Field service businessesSmall service teams capturing billable time and expenses away from the office.

Invoicing & Billing System

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Reference

Roles and permissionsGive each person the records and decisions their work requires. Reports and analyticsRead operational and financial results with their source context. Data modelSee the records and references behind the product.
AI and integrationsConnect the services that own the related business results. ImplementationConfigure the system around your business records and responsibilities. Proto configuration guideUse Proto to configure and maintain the same product described on this website.

Invoicing & Billing System

Start now
Pricing Questions and answers Get started
Build with Proto
All systems
Modules
Clients and estimatesAgree the work and payment terms before creating an invoice.Invoice preparationPrepare invoices with clear lines, due dates and a preserved document history.Recurring billingManage retainers and repeat invoices from an explicit billing schedule.Payments and reconciliationConnect customer receipts to invoices and check their actual payment outcome.Billable workBring approved expenses and recorded time into the right customer invoice.Collections and reportingFollow up on outstanding invoices with the right customer context.
Processes
Estimate to invoiceCarry the customer’s accepted scope, prices and tax treatment into a supported invoice.Recurring billing to collectionRun repeat billing on the agreed schedule and follow each invoice through confirmed collection.Receipt to reconciliationSee what was billed, what has actually been collected and which balances still need follow-up.Billable work to invoiceTurn recorded time and reimbursable expenses into an invoice your customer can trace back to the work.
Industries
Professional servicesConsultancies and independent specialists billing agreed work and reimbursable expenses.Retainer businessesAgencies and service providers invoicing repeat commitments.Field service businessesSmall service teams capturing billable time and expenses away from the office.
Reference
Roles and permissionsGive each person the records and decisions their work requires.Reports and analyticsRead operational and financial results with their source context.Data modelSee the records and references behind the product.AI and integrationsConnect the services that own the related business results.ImplementationConfigure the system around your business records and responsibilities.Proto configuration guideUse Proto to configure and maintain the same product described on this website.
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Invoicing & Billing System Processes
Recurring billing to collection2 of 4
  • Estimate to invoice1 of 4
  • Recurring billing to collection2 of 4
  • Receipt to reconciliation3 of 4
  • Billable work to invoice4 of 4

Recurring billing to collection

Run repeat billing on the agreed schedule and follow each invoice through confirmed collection.

4 stages · 0 approvals

Roles and responsibilities

Bookkeeper Assistant System 1 Client and itemsetup Clients 2 Recurring schedulerun RecurringSchedules each occurrence once · system 3 Invoice issue Invoices 4 Payment receipt Payments
  1. Step 1Client and item setup
    Estimates Awaiting ApprovalSent
    Estimate NumberClientIssue DateExpiry Date
  2. Step 2Recurring schedule run
    Active Recurring SchedulesActive
    Schedule NumberClientNameFrequency
    Bi Weekly
  3. Step 3Invoice issue
    Outstanding InvoicesSent
    Invoice NumberClientIssue DateDue Date
  4. Step 4Payment receipt
    Recent PaymentsCleared
    Payment NumberInvoiceClientMethod
    ACH
Red diamonds require approval.Rows show responsibility for each step.Dashed lines are records the system creates.

Process steps

Follow the process from start to finish. Select a step to see who acts and what changes.

01Client and item setup02Recurring schedule run03Invoice issue04Payment receipt

Client and item setup

Check customer identity, billing terms and reusable item descriptions; preserve source identifiers when importing existing customers.

Responsible
Bookkeeper
Records
ClientsItems
Effect
Check customer identity, billing terms and reusable item descriptions; preserve source identifiers when importing existing customers
Estimates Awaiting ApprovalEstimates
StatusSentViewed
Sent
EST-58050CUS-184
EST-19429CUS-154
EST-17884CUS-170
Viewed
EST-41855CUS-229
EST-69949CUS-085
EST-98813CUS-114
Clients and estimates →

Recurring schedule run

Honor the active schedule, start and end dates, mandate and catch-up policy. Generate each occurrence once; payment authorization or auto-send settings do not certify settled cash.

Responsible
Bookkeeper
Records
RecurringSchedulesRecurringScheduleLinesInvoices
Effect
Honor the active schedule, start and end dates, mandate and catch-up policy
Active Recurring SchedulesRecurringSchedules
Active
Schedule NumberClientNameFrequencyStart Date
RS-99029CUS-085Schedule 928Weekly16 Sep
RS-43022CUS-119Schedule 768BiWeekly14 Sep
RS-44035CUS-010Schedule 575Monthly21 Sep
RS-64799CUS-237Schedule 645Quarterly13 Sep
RS-80884CUS-066Schedule 756Annual25 Sep
RS-29283CUS-197Schedule 676Weekly12 Sep
Recurring billing →

Invoice issue

Validate scoped authority and freeze the issued lines, tax calculation and PDF before sending. Delivery attempts and hosted checkout creation retain the same invoice identity.

Responsible
Assistant
Records
InvoicesInvoiceLinesPaymentLinks
Effect
Validate scoped authority and freeze the issued lines, tax calculation and PDF before sending
Outstanding InvoicesInvoices
StatusSentViewedPartialPaidOverdue
Sent
INV-70758CUS-234
INV-33407CUS-058
Viewed
INV-52435CUS-085
INV-73958CUS-204
PartialPaid
INV-29508CUS-200
Overdue
INV-30898CUS-231

Payment receipt

Verify provider identity, signature, customer, amount and currency before accepting a receipt. Only a confirmed successful payment state contributes to collection; retain refunds, disputes and unsettled outcomes separately.

Responsible
Bookkeeper
Records
PaymentsPaymentLinksInvoices
Effect
Verify provider identity, signature, customer, amount and currency before accepting a receipt
Recent PaymentsPayments
StatusClearedRefundedDisputed
Cleared
PYM-87260CUS-118570 processor fee
PYM-25949CUS-063120 processor fee
Refunded
PYM-96285CUS-208520 processor fee
PYM-58814CUS-166880 processor fee
Disputed
PYM-69824CUS-074730 processor fee
PYM-51994CUS-067280 processor fee
Payments and reconciliation →
Approvals and controls

0 approvals required in this process

  • Respect the schedule’s datesActive state, mandate and agreed catch-up policy.
  • Create one invoice per occurrenceEven when an interrupted run is retried.
  • Keep payment authorizationInvoice delivery and confirmed collection as separate outcomes.

Records and postings

StageRecordsEffect
1 Client and item setup ClientsItems Check customer identity, billing terms and reusable item descriptions; preserve source identifiers when importing existing customers
2 Recurring schedule run RecurringSchedulesRecurringScheduleLinesInvoices Honor the active schedule, start and end dates, mandate and catch-up policy
3 Invoice issue InvoicesInvoiceLinesPaymentLinks Validate scoped authority and freeze the issued lines, tax calculation and PDF before sending
4 Payment receipt PaymentsPaymentLinksInvoices Verify provider identity, signature, customer, amount and currency before accepting a receipt
Data model →

Process reports

All reports

Income Summary

Total invoiced, total collected, total outstanding, by month and by Client. Trailing-12-months with month-over-month delta. The Owner's daily landing report — answers "how much did I make this month and who hasn't paid me."

Invoice Collection BoardInvoices
StatusSentViewedPartialPaidPaidOverdue
Sent
INV-37499CUS-217
INV-73699CUS-008
Viewed
INV-13975CUS-019
PartialPaid
INV-17150CUS-210
Paid
INV-85671CUS-069
Overdue
INV-33787CUS-120

Aging Summary

Outstanding invoice balance bucketed by Current, 1–30 days overdue, 31–60, 61–90, 90+. Per Client. Lightweight aging — not the full dunning-band workout of a mid-market AR app, just enough to see who to chase.

Outstanding InvoicesInvoices
StatusSentViewedPartialPaidOverdue
Sent
INV-70758CUS-234
INV-33407CUS-058
Viewed
INV-52435CUS-085
INV-73958CUS-204
PartialPaid
INV-29508CUS-200
Overdue
INV-30898CUS-231

Payment Methods Breakdown

Per period: amount collected by Method (Card, ACH, Check, Cash, Other) with total ProcessorFee and total NetDeposit. Used to compare Stripe / Square economics and to reconcile the bank deposit.

Recent PaymentsPayments
StatusClearedRefundedDisputed
Cleared
PYM-87260CUS-118570 processor fee
PYM-25949CUS-063120 processor fee
Refunded
PYM-96285CUS-208520 processor fee
PYM-58814CUS-166880 processor fee
Disputed
PYM-69824CUS-074730 processor fee
PYM-51994CUS-067280 processor fee

Recurring Revenue Pipeline

Active RecurringSchedules with projected next 90 days of invoices (Frequency × Rate × OccurrencesRemaining). The MRR-style forward look for a retainer-heavy business.

Active Recurring SchedulesRecurringSchedules
Active
Schedule NumberClientNameFrequencyStart Date
RS-99029CUS-085Schedule 928Weekly16 Sep
RS-43022CUS-119Schedule 768BiWeekly14 Sep
RS-44035CUS-010Schedule 575Monthly21 Sep
RS-64799CUS-237Schedule 645Quarterly13 Sep
RS-80884CUS-066Schedule 756Annual25 Sep
RS-29283CUS-197Schedule 676Weekly12 Sep

Sales Tax Collected

Review tax amounts attributed to collected invoice lines under the configured reporting basis. This report supports a separate reviewed filing process; it does not determine nexus or file returns.

Invoice Collection BoardInvoices
StatusSentViewedPartialPaidPaidOverdue
Sent
INV-37499CUS-217
INV-73699CUS-008
Viewed
INV-13975CUS-019
PartialPaid
INV-17150CUS-210
Paid
INV-85671CUS-069
Overdue
INV-33787CUS-120
Run by an agent

Agent support

Proto cannot supply a missing business approval, invent external payment or posting outcomes, or weaken the server permissions. Reviewed source records and configured integrations determine the available actions. Retain the result of each actual operation and investigate unsupported requirements before enabling automatic execution.

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# Example after configuration $ curl -fsSL https://www.erp.ai/skill.md | paste into your agent › recurring billing to collection · client and item setup on Clients, Items ✓ Check customer identity, billing terms and reusable item descriptions; preserve source identifiers when importing existing customers. › recurring billing to collection · recurring schedule run on RecurringSchedules, RecurringScheduleLines, Invoices ✓ Honor the active schedule, start and end dates, mandate and catch-up policy. › recurring billing to collection · invoice issue on Invoices, InvoiceLines, PaymentLinks ✓ Validate scoped authority and freeze the issued lines, tax calculation and PDF before sending. › recurring billing to collection · payment receipt on Payments, PaymentLinks, Invoices ✓ Verify provider identity, signature, customer, amount and currency before accepting a receipt.

Other processes

3 more
Estimates Awaiting ApprovalSent
Estimate NumberClientIssue DateExpiry Date

Estimate to invoice

Carry the customer’s accepted scope, prices and tax treatment into a supported invoice.

4 stages · 1 approval

Draft InvoicesDraft
Invoice NumberClientIssue DateDue Date

Receipt to reconciliation

See what was billed, what has actually been collected and which balances still need follow-up.

4 stages · 0 approvals

Draft InvoicesDraft
Invoice NumberClientIssue DateDue Date

Billable work to invoice

Turn recorded time and reimbursable expenses into an invoice your customer can trace back to the work.

4 stages · 0 approvals

ERP•AI workspace

Start now Invoicing & Billing System

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Previous · process 1 of 4Estimate to invoiceNext · process 3 of 4Receipt to reconciliation

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Recurring billing to collection.
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