Client portal
Use this page to securely upload documents and complete online forms for Mastin Harris Accountants.
Upload your files securely
Click the button below to open a secure Dropbox upload page in a new tab. You can attach multiple files (for example: tax documents, statements, spreadsheets, PDFs and images).
Please include your full name and a short note about what the documents relate to (for example: “2025 individual tax return” or “ABC Pty Ltd – year-end records”). Do not email Tax File Numbers or bank account details – use this upload instead.
Client forms
Choose the form that best fits your situation. The form will open below on this page.
Personal tax forms
Business, SMSF & structure forms
Select a form above. Once selected, the form will appear here for you to complete.