How to Sync Time Entries with QuickBooks for Seamless Invoicing

By Florian7 min read min read
quickbooksintegrationaccountinginvoicingpro features

Manually entering time data into your accounting software is tedious and error-prone. The Timesheet-QuickBooks integration eliminates this double entry by automatically syncing your tracked time to QuickBooks Online.

This guide covers the complete setup process and best practices for a smooth integration.

Note: QuickBooks integration is available with Timesheet Pro.

QuickBooks IntegrationPro
Sync your tracked time directly to QuickBooks Online. Projects map to customers, and invoice status flows back automatically.

#What the Integration Does

#One-Way and Two-Way Sync

From Timesheet to QuickBooks:

  • Time entries sync as billable time
  • Projects map to customers
  • Team members map to employees/contractors

From QuickBooks to Timesheet:

  • Invoice status updates (when time is invoiced)
  • Payment status updates (when invoices are paid)

#Sync Frequency

  • Automatic sync runs every 15 minutes
  • Manual sync available anytime
  • Real-time webhook updates for status changes

#Prerequisites

Before connecting, ensure you have:

  • Timesheet Pro subscription active
  • QuickBooks Online account (not Desktop)
  • Admin access to both accounts
  • Projects set up in Timesheet
  • Customers set up in QuickBooks

#Connecting to QuickBooks

#Step 1: Initiate Connection

  1. In Timesheet web app, go to Settings > Integrations
  2. Find QuickBooks Online
  3. Click Connect

#Step 2: Authorize Access

  1. You'll be redirected to QuickBooks
  2. Sign in to your QuickBooks account
  3. Review the permissions requested
  4. Click Connect to authorize

#Step 3: Confirm Connection

  1. You'll return to Timesheet
  2. See confirmation of successful connection
  3. Your QuickBooks company name will be displayed

#Mapping Projects to Customers

The crucial step: telling Timesheet which projects correspond to which QuickBooks customers.

#Accessing Mapping Settings

  1. Go to Settings > Integrations > QuickBooks
  2. Find Project Mapping section
  3. See list of your Timesheet projects

#Creating Mappings

For each project you want to sync:

  1. Find the project in the list
  2. Click the dropdown next to it
  3. Select the corresponding QuickBooks customer
  4. Save

#Mapping Options

Timesheet ProjectQuickBooks Customer
Acme Corp WebsiteAcme Corporation
Johnson ConsultingJohnson & Associates
Internal Projects(Don't sync)

#Tips for Mapping

Exact matches: Names don't need to match—just select the right customer from the dropdown.

New customers: If a customer doesn't exist in QuickBooks, create it there first, then map.

Skip internal projects: Leave mapping empty for projects you don't want to sync.

#Mapping Team Members

If you have a team, map members to QuickBooks employees or vendors.

#Employee vs. Vendor Mapping

  • Employees: For W-2 staff tracked in QuickBooks payroll
  • Vendors: For contractors (1099) paid through accounts payable

#Creating Team Mappings

  1. In QuickBooks settings, find Team Mapping
  2. For each team member:
    • Select corresponding QuickBooks employee or vendor
    • Save

#Why This Matters

Mapped team members allow QuickBooks to:

  • Track time by person for payroll
  • Generate reports by employee
  • Apply correct labor costs

#Understanding Automatic Sync

#What Syncs

Every 15 minutes, Timesheet sends:

  • New billable time entries
  • Updates to existing entries
  • Corrections and deletions

#What Triggers Sync

  • Any change to billable time entries
  • Tasks marked as billed or paid
  • Project mapping changes

#Sync Status

Check sync status in:

  • Settings > Integrations > QuickBooks
  • See last sync time
  • View any errors or warnings

#Creating Invoices from Synced Time

Once time is in QuickBooks, create invoices the normal QuickBooks way.

#In QuickBooks

  1. Go to Sales > Invoices
  2. Click Create Invoice
  3. Select the customer
  4. QuickBooks shows unbilled time entries
  5. Add time entries to the invoice
  6. Review and send

#Status Updates Back to Timesheet

When you invoice time in QuickBooks:

  • Timesheet marks those entries as "Billed"
  • When payment is received, entries show as "Paid"
  • This two-way sync keeps everything aligned

#Manual Sync Options

Sometimes you need to sync immediately.

#Force Immediate Sync

  1. Go to Settings > Integrations > QuickBooks
  2. Click Sync Now
  3. Wait for completion
  4. Review results

#When to Manual Sync

  • After bulk time entry changes
  • Before sending an invoice
  • After fixing mapping errors
  • When troubleshooting sync issues

#Handling Sync Conflicts

Sometimes data conflicts occur.

#Common Conflicts

Edited in both places: Time entry changed in Timesheet and QuickBooks

  • Resolution: Timesheet is the source of truth for time; QuickBooks is source for invoice status

Deleted time: Entry deleted in one system but not the other

  • Resolution: Deletions in Timesheet remove from QuickBooks; deletions in QuickBooks don't affect Timesheet

Changed mappings: Project mapping changed after entries synced

  • Resolution: Previously synced entries stay with original customer; new entries use new mapping

#Avoiding Conflicts

  • Edit time in Timesheet, not QuickBooks
  • Mark as billed/paid in QuickBooks, not Timesheet
  • Don't delete synced time from QuickBooks

#Best Practices

#Set Up Mapping Before Tracking

Map projects to customers before your team starts tracking. This prevents "orphan" time entries.

#Use Consistent Project Names

While mapping handles the connection, consistent naming helps you remember what connects where.

#Review Weekly

Check sync status weekly:

  • Any failed syncs?
  • Unmapped projects with time?
  • Correct customer assignments?

#Reconcile Monthly

Before monthly close:

  1. Ensure all time is synced
  2. Create invoices for billable time
  3. Record payments received
  4. Verify totals match between systems

#Document Your Mappings

Keep a reference document of:

  • Which projects map to which customers
  • Which team members map to which employees/vendors
  • Any special handling rules

#Troubleshooting

#"Time not appearing in QuickBooks"

Check:

  • Is the project mapped to a customer?
  • Is the time entry marked as billable?
  • Has enough time passed since the last sync? (15 min)
  • Is the connection still active?

#"Connection expired"

QuickBooks tokens expire periodically:

  1. Go to Integrations settings
  2. Disconnect QuickBooks
  3. Reconnect and re-authorize

#"Duplicate entries"

If you see duplicates:

  • Don't delete in QuickBooks (they'll re-sync)
  • Check if entries were modified in Timesheet
  • Contact support if persistent

#"Wrong customer"

If time synced to wrong customer:

  1. Update the project mapping in Timesheet
  2. In QuickBooks, move the time entry to correct customer manually
  3. Future entries will use correct mapping

#Disconnecting QuickBooks

If you need to disconnect:

  1. Go to Settings > Integrations > QuickBooks
  2. Click Disconnect
  3. Confirm

#What Happens

  • Sync stops immediately
  • Existing data in both systems remains
  • No automatic deletion occurs
  • You can reconnect anytime

#Summary

The QuickBooks integration eliminates manual data entry:

  • Connect: OAuth authorization between apps
  • Map: Link projects to customers, team to employees
  • Sync: Automatic 15-minute sync
  • Invoice: Create invoices from synced time in QuickBooks
  • Track: Status updates flow back to Timesheet

Set it up once, and your time data flows seamlessly into your accounting system.

#What's Next?

With QuickBooks connected:

  • Add more integrations like Zapier for expanded automation
  • Generate reports comparing Timesheet and QuickBooks data
  • Train your team on the integrated workflow

Automate your accounting

Start your Pro trial and connect Timesheet to QuickBooks today.

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How to Sync Time Entries with QuickBooks for Seamless Invoicing | Timesheet Blog | timesheet.io