Depreciation is the most predictable calculation in accounting - the rate is fixed, the formula is standard, and the inputs are known. Yet it is also one of the most commonly miscalculated areas in Nepali SME accounting. Depreciation calculation software Nepal accountants need automates a process that should never require manual effort: applying the correct IRD rate to each asset class, calculating the amount on the current book value, posting the journal entry, and generating the tax depreciation schedule that goes into the income tax return.
The manual process breaks down in three specific ways. First, asset purchases mid-year are often depreciated incorrectly because the partial-year calculation (days from purchase date to Ashadh 31) is applied inconsistently by different staff. Second, when a business has 50+ assets across multiple classes, the spreadsheet that holds the depreciation schedule becomes a complex maintenance task where errors compound year on year. Third, assets that have been disposed of sometimes continue to show depreciation in the schedule because the disposal was recorded in the accounting system but the depreciation spreadsheet was never updated.
Automated depreciation eliminates all three problems. The schedule is generated from the asset register, runs on a defined schedule, and self-corrects when assets are added or disposed of - without anyone maintaining a parallel spreadsheet.
Classify Each Asset Into the Correct IRD Category
Nepal's Income Tax Act classifies fixed assets into categories, each with a prescribed depreciation rate under the Written Down Value (WDV) or Declining Balance method. The classification step is the most critical: an asset placed in the wrong category depreciates at the wrong rate, producing an incorrect tax deduction for every year it remains in the register. The classification is straightforward for most assets (a motor vehicle belongs to the vehicle category, a laptop to the computer and electronic equipment category) but can require judgment for assets that fit multiple categories or that are being depreciated for management purposes at a different rate than the IRD requires. The system should enforce category selection at the time of asset creation so every asset has a depreciation rate assigned before it enters service.
Configure IRD Depreciation Rates by Asset Class
The rates below represent the commonly cited IRD depreciation rates under Nepal's Income Tax Act for tax purposes. These should be verified against the current Income Tax Act and any Finance Act amendments before finalizing the system configuration. Rates are applied on the Written Down Value (declining balance) method:
| Asset Class | WDV Rate (%) | Examples |
|---|---|---|
| Motor Vehicles | 20% | Cars, trucks, motorcycles, excavators |
| Computer and Electronic Equipment | 25% | Computers, printers, servers, networking equipment |
| Furniture and Fixtures | 25% | Office furniture, shelving, partitions |
| Plant and Machinery | 15% | Production equipment, generators, AC units |
| Buildings (Business Use) | 5% | Commercial buildings used in the business |
Nepal's Income Tax Act groups assets into block categories for depreciation purposes. All assets in the same category share a pool - additions to the pool increase it, disposals reduce it, and depreciation is calculated on the pool balance. This pooling approach means that the tax depreciation amount is not per-asset but per-category pool. Individual asset book values within the pool are tracked for management reporting, but the tax return uses the pool balance. Your tax advisor can confirm whether your organization is using the pooling method or individual asset method and which is more appropriate for your asset base and tax position.
Configure the Depreciation Schedule - Monthly or Annual Posting
Depreciation can be posted to the accounts monthly or annually. Monthly posting gives a more accurate P&L throughout the year - each month shows the correct depreciation charge rather than taking the full year's charge in the last month. Annual posting is simpler and creates less accounting volume but produces a P&L that understates depreciation for eleven months and overstates it in the twelfth. Most organizations working toward accurate management reporting choose monthly posting. Organizations focused primarily on tax compliance often use annual posting at year-end.
Management depreciation and tax depreciation may differ when Nepal Accounting Standards allow straight-line method (SLM) for management accounts while tax follows the WDV method. SLM spreads the cost evenly over the asset's estimated useful life - a vehicle with a 5-year useful life depreciates at 20% per year on the original cost. WDV applies 20% to the declining book value, so the depreciation amount decreases each year but the asset never fully depreciates to zero. Organizations with significant fixed assets and external reporting requirements often maintain both schedules, with the difference between them reflected as deferred tax. The system should support both methods applied to different depreciation schedule configurations.
Run Depreciation and Review the Calculation
When the depreciation run is triggered, the system processes every active asset in the register, applies the applicable rate to the current book value, calculates the depreciation amount for the period (adjusted for partial periods when assets were purchased or disposed of mid-year), and generates a preview of the depreciation journal before posting. The review step is critical: the accountant checks that the total depreciation amount is reasonable, that no disposed assets are included in the run, and that newly added assets are calculating correctly from their purchase date. Any discrepancy is corrected in the asset register before the journal is posted. Once posted, the depreciation journal reduces the book value of each asset on the balance sheet and charges the depreciation expense to the P&L.
Generate the Tax Depreciation Schedule and Year-End Reporting
At fiscal year-end (Ashadh 31), the system generates the tax depreciation schedule in the format required for the income tax return. The schedule shows opening book values per category, additions during the year, disposals during the year, depreciation for the year at the applicable rate, and closing book values per category. This schedule is the direct input to Section 3 of the income tax computation. The same system generates the fixed asset schedule required for the statutory audit: asset-wise opening cost, additions, disposals, closing cost, accumulated depreciation, and net book value per asset and per category. When both schedules come from the same asset register, the tax and audit figures are consistent without manual reconciliation.
Depreciation automation converts a manual year-end exercise that takes 2-3 days into a monthly system process that takes minutes to review and approve. The tax depreciation schedule and the audit fixed asset schedule are by-products of the same automated calculation, consistent by construction rather than by manual reconciliation.
Depreciation calculated manually in a spreadsheet at year-end - errors compound annually
Automated monthly depreciation run from asset register - reviewed before posting, never missed
Mid-year purchases partially depreciated inconsistently by different staff members
Partial-period depreciation calculated from exact purchase date without any manual proration
Wrong IRD rates applied when assets miscategorized - tax position inaccurate
Category selected at asset creation - IRD rate pre-configured per category, applied consistently
Disposed assets continue depreciating in the spreadsheet if the disposal is missed
Disposal removes asset from next depreciation run - no phantom depreciation on disposed items
Tax depreciation schedule manually prepared from spreadsheet for each IRD return
Tax depreciation schedule generated from system at year-end - consistent with audit figures
Frequently Asked Questions
For a vehicle purchased mid-year, the first year's depreciation is prorated from the purchase date to Ashadh 31. If a vehicle costing NPR 40 lakhs was purchased in Poush (approximately 7 months before Ashadh 31), the first year's depreciation is 20% of NPR 40 lakhs multiplied by 7/12, giving approximately NPR 4.67 lakhs. The opening book value for year 2 is NPR 40 lakhs minus NPR 4.67 lakhs = NPR 35.33 lakhs. Year 2 depreciation is 20% of NPR 35.33 lakhs = NPR 7.07 lakhs. The automated system calculates this proration from the exact purchase date without any manual fraction calculation.
Yes. The depreciation module can maintain two separate schedules per asset: a tax schedule using the IRD-prescribed WDV rate and a management schedule using a straight-line rate over the asset's estimated useful life. The tax schedule produces the figures that go into the income tax return. The management schedule produces the figures in the monthly management P&L. The difference between the two depreciation amounts creates a deferred tax movement, which the system can calculate and post if the organization maintains deferred tax accounting. Most Nepali SMEs use WDV for both and do not maintain a separate management schedule - but the capability is available for organizations that need it.
In the year of disposal, depreciation is calculated from the start of the year (or the prior year closing book value) to the disposal date - a partial-year calculation. After the disposal date, the asset is removed from the register and does not generate any further depreciation. The disposal entry simultaneously removes the cost and accumulated depreciation from the balance sheet and recognizes the gain or loss on disposal based on the sale proceeds versus the remaining book value at the time of disposal. The tax treatment of this gain or loss depends on the Income Tax Act provisions for the asset class, which should be confirmed with your tax advisor.
IRD-Rate Depreciation Automated From Asset Register to Journal to Tax Schedule
MISAC's depreciation module is configured with IRD-prescribed WDV rates pre-loaded by asset class. When an asset is created with its category, the depreciation rate is assigned automatically. Monthly depreciation runs process all active assets, calculate the correct amount per asset (with partial-period proration for additions and disposals in the month), and present a review summary before posting. The journal posts depreciation expense to the P&L and accumulated depreciation to the balance sheet without any manual entry.
At fiscal year-end, the tax depreciation schedule is generated from the system in the category-by-category format that IRD and the income tax return require. The same system generates the audit fixed asset schedule at asset level. Both documents draw from the same underlying data, so the totals are consistent by construction - not by a manual reconciliation exercise that creates a significant audit preparation effort every year.
MISAC Intelligence Pvt. Ltd. has set up automated depreciation for Nepali organizations from small trading companies with 20 assets to construction firms with 200+ assets across vehicles, heavy equipment, and site infrastructure. The initial configuration includes asset category setup, rate configuration, and opening balance migration. Contact the team at mis.ac to see how depreciation automation integrates with the broader fixed asset and accounting modules.
Ready to See MISAC in Action?
Automate your fixed asset depreciation so the year-end tax schedule is a report run, not a three-day manual exercise - contact the MISAC team to see how depreciation works in the system.