How to depreciate fixed assets in previous years and what to do in subsequent periods?

To make up for previous depreciation:

Borrow: Adjustment to prior years' profit and loss

Loan: Accumulated depreciation

Borrow: Profit distribution-unappropriated profit

Loan: Adjustment to prior years' profit and loss

To be accrued later on as normal:

Borrow: Manufacturing overhead

Loan: Accumulated Depreciation

What the depreciation amount is depends on the original value and estimated net salvage value of your fixed assets, the estimated useful life, and the depreciation method used.