Whilst painting your hallway.
You would use a template.
To use an Excel template in SharePoint, first navigate to the document library where the template is stored. Click on the template file to open it in Excel Online or download it to your computer. After making any necessary edits, you can save the file back to SharePoint by choosing "Save As" and selecting the appropriate document library or folder. If you're using the template frequently, you can also create a new document based on the template directly from SharePoint by selecting "New" and then choosing the template.
It is an Excel template file.
An Excel template is an Excel file. Excel templates are ready made files that help save time. Templates are ready made files that meet popular needs - such as resumes, calenders, account spreadsheets and timesheets. You can use a template to give you a starting point for standard files that you want to create. A regular Excel file is actually based on the Normal template. While it is a template, it is mainly left blank giving the user more freedom to create the file they want.
.XLS files are standard Microsoft Excel spreadsheet files. .XLT extension is used for the Excel template files. - Neeraj Sharma
Open in Excel and save as an Excel Template.
The extension xls is a spreadsheet and xlt is a template. A template is a pre-designed layout for an Excel spreadsheet.
You can use google docs or microsoft excel and search for a home budget template.
A template.
First design what layout you want for your template. Then do a SAVE AS and pick a template rather than a normal workbook.
A Gantt chart template can be used alongside software such as Microsoft Excel to present data and charts in the Gantt chart format. Microsoft Excel does not include the Gantt chart format by default.
Templates can be changed, so yes you can add formulas and then save the template and have the new formulas included.