Digital Estimates, 1-Click WhatsApp Approvals & Tax-Compliant E-Invoicing

Turn Repair Estimates into Paid Invoices with Digital Estimates & Invoicing

Eliminate phone tag and unapproved work. Send interactive repair estimates straight to customer smartphones via WhatsApp or SMS, capture digital sign-offs, and generate ZATCA and VAT-compliant tax invoices instantly.

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Interactive Repair Estimate Approval & E-Invoice Terminal

Estimate #EST-3091 • Digital WhatsApp Approval • ZATCA Tax Invoice

Quote #EST-3091: Approved via WhatsApp • Ready for Invoicing
Device Diagnostic Findings & Selected Option iPhone 14 Pro Max • IMEI: 354891028491023
Customer Selected Option A ✓ Micro-Soldering Audio IC Repair + Rear Glass Genuine OEM rear glass panel + 6-Month Board Warranty
$185.00
Upfront Diagnostic Intake Fee: Paid at check-in • Credited automatically
-$30.00
Net Taxable Total: $155.00
VAT (15%): $23.25
Final Balance Due: $178.25
Digital Sign-off & Tax Hash ZATCA Phase 2
Signed By: Sultan Al-Otaibi
Audit Timestamp: 10:14:22 AM (Verified)
Channel: WhatsApp 1-Tap Link ✓
QR Code
Cryptographic E-Invoice QR VAT #310294819200003
💬 WhatsApp E-Bill
📄 A4 PDF / 80mm
Saudi ZATCA: Phase 1 & 2 Compliant
UAE FTA VAT: TRN 100% Validated
Pay Links: Apple Pay & Tabby
E-Signatures: Timestamped Audit

Engineered for Regional Tax Authorities, Payment Gateways & BNPL Financing

ZATCA Phase 2 UAE FTA VAT Apple Pay Mada Network Tabby BNPL Tamara
Invoicing Liabilities

Why traditional paper estimates and verbal quotes cost repair shops thousands

Customers dispute verbal phone quotes, repairs stall waiting days for approvals, and non-compliant invoices risk severe tax penalties.

Phone Tag & Delayed Repair Approvals

A technician diagnoses a blown power IC, but the customer won't answer phone calls. The disassembled device sits on the bench for four days, tying up shop space.

Interactive 1-Click WhatsApp Estimates

Customers receive an interactive link on WhatsApp showing photos of the defect, parts options (OEM vs Aftermarket), and a single tap to approve or decline.

Customer "I Never Agreed to That" Disputes

At pickup, the customer claims they only agreed to a $40 battery, not the $120 charging port repair, forcing the shop to eat the loss or face a shouting match.

Digital Signatures & Timestamped Audit Logs

Every customer approval is stamped with their IP address, timestamp, device IMEI, and electronic signature, providing undeniable legal proof.

Non-Compliant Invoices & Manual Tax Headaches

Handwritten receipts or generic templates lack cryptographic QR codes, required tax IDs, or itemized labor vs parts, exposing your business to audit fines.

ZATCA Phase 2 & VAT-Compliant E-Invoices

Generate fully compliant B2C and B2B electronic invoices with cryptographic QR codes, tax summaries, and automated accounting sync.

Digital WhatsApp Approvals

Interactive WhatsApp Estimates & Tiered Repair Options

Empower customers to choose their budget and approve repairs from anywhere in seconds.

  • Tiered parts choices: offer "OEM Original Pull" vs "Premium Aftermarket" with transparent warranty differences
  • Diagnostic photo attachments: show microscopic photos of liquid corrosion, cracked flex cables, or swollen batteries
  • Instant status trigger: approving the quote automatically changes the workshop ticket status to "Parts Ready for Bench"
Interactive WhatsApp Estimate Link
1-Tap Approve
Diagnostic Microscope Photo Customer sees corrosion & broken trace photo
Attached 📷
Tiered Parts Selection OEM Pull vs Premium Aftermarket pricing comparison
2 Options
Average Customer Approval Speed: Under 8 Minutes ⚡
ZATCA & VAT Compliance

ZATCA & VAT Tax Compliance with QR Code Security

Meet strict regional tax authorities across Saudi Arabia (ZATCA), the UAE (FTA), and international VAT jurisdictions.

  • Phase 2 compliant QR codes: encoded with seller name, VAT registration number, timestamp, total with tax, and cryptographic hash
  • Itemized labor and parts split: display tax-exempt diagnostic credits alongside taxable hardware parts and labor fees
  • Automated credit memos & refunds: issue compliant tax credit notes for returns or warranty replacements without manual math
Official Tax E-Invoice Format

Tax Invoice #INV-2094 • VAT 15% Verified

ZATCA Ready
Encrypted Cryptographic QR Code TLVs: Seller + VAT ID + Timestamp + Hash
Valid Hash ✓
Itemized Labor vs Hardware Separate tax lines for parts and diagnostic labor
Itemized ✓
Audit Risk Exposure: 0% Risk (100% Compliant)
Deposit Rollover & Paylinks

Diagnostic Deposit Credits & Seamless Online Checkout

Automate your financial workflow from initial bench intake to final bank settlement.

  • Upfront deposit rollover: automatically deduct initial diagnostic check-in fees from final invoice balances
  • Online payment links: embed Apple Pay, credit card, and Tabby/Tamara installment links directly inside the invoice message
  • One-click PDF & thermal prints: print 80mm till receipts or export full A4 corporate invoices with your repair shop logo
Embedded Online Payment Portal
Apple Pay & BNPL
1-Touch Mobile Checkout Customer settles bill from home before store pickup
Instant Auth
Split in 4 Installments (Tabby & Tamara) Increases expensive logic board repair approvals by 35%
4x Payments
Ledger Posting: Automatic Real-Time Sync
Technical Comparison

TamamFlow Digital Invoicing vs. Paper Estimates & Phone Quotes

A direct feature comparison for WhatsApp quotes, digital signatures, ZATCA e-invoicing, and deposit credits.

Invoicing & Estimate Feature TamamFlow Generic Accounting Paper Bills & Phone
Interactive WhatsApp Estimate Link & 1-Tap Sign-off ✓ Instant Smartphone Approval ✗ Clunky email links ✗ Endless phone tag
ZATCA Phase 2 Cryptographic QR E-Invoice ✓ 100% Regional Compliance ⚠ Expensive plugin needed ✗ Severe audit risk
Automatic Diagnostic Intake Deposit Credit Line ✓ Seamless Intake to Invoice ✗ Manual entry only ✗ Lost deposit disputes
Tiered Multi-Option Estimates (OEM vs Aftermarket) ✓ Budget-Friendly Choices ✗ Single price quote only ✗ Customer drops repair
Direct Answers

Frequently Asked Questions

Everything you need to know about repair shop estimates and invoicing.

Yes! Customers receive a secure WhatsApp or SMS link to view the estimate with photos, parts breakdown, and pricing. They can sign and approve with a single tap from any phone or browser.
Yes. TamamFlow supports regional e-invoicing standards, including Saudi ZATCA Phase 1 & Phase 2 QR codes, UAE VAT compliance, and standard international sales tax formats.
If a customer declines the estimate, the ticket status automatically changes to "Declined - Ready for Reassembly". The technician is notified to reassemble the device and invoice only the diagnostic fee.
Yes. TamamFlow automatically carries over any upfront diagnostic fees collected during device intake as a deposit line item on the final invoice.
Yes. You can print fast 80mm thermal receipts at the front desk or export detailed, professional A4 PDF tax invoices for corporate and B2B clients.
Absolutely. The estimate builder allows you to present tiered options with differing price points and warranty terms so customers can choose what fits their budget.

Ready to Send WhatsApp Estimates & Issue ZATCA-Compliant Tax Invoices?

Start your 14-day free trial now. No credit card required, digital estimate setup takes under 60 seconds.