As LabManager is very good at doing your sales invoicing (per job or as a summary), statements, payment allocations and controlling your debtors, you only need to provide the transaction totals to your bookkeeper/accountant for entry into your main accounts.  

OPTION 1

Once a month email or print the Manager's Financial Report from LabManager for your accountant/book-keeper. (Report menu > Accounting > Managers Financial Report).

Record your expenses on a spreadsheet or your book-keeper's recommended application, and ask your book-keeper to give you access to your accounts. These may be in paper form but more likely your book-keeper/accountant will be using an accounts program like Sage.

Let your book-keeper/accountant know that in addition to the Manager's Financial Report, LabManager can export to several formats. See the CSV Exporter.

OPTION 2

You don't have a 'close contact' book-keeper/accountant and wish to record your transactions yourself and just hand these over to an accountant for the end of year stuff.

Once a month email or print the Manager's Financial Report from LabManager. (Report menu > Accounting > Managers Financial Report). Enter the sales totals into your favourite spreadsheet or paper-work.

Track your expenses using one of many free applications or simple spreadsheets. Also consider a low-cost commercial accounting program.