Fixed Asset Manager field definitions: what each depreciation data point actually means

QuickBooks Fixed Asset Manager presents users with a dense grid of depreciation-related data fields, and the product’s own help documentation acknowledges that understanding what each one represents is a recurring point of confusion. The accepted community resource on the topic is essentially a glossary — a field-by-field breakdown of what the software calculates, where the values come from, and which ones users can modify. What follows is a synthesis of those definitions for the fields users most frequently encounter.

Accumulated Depreciation Fields

Fixed Asset Manager tracks several variations of accumulated depreciation, and the distinctions matter for accurate reporting:

• Accumulated Depreciation Beginning of Year (BOY) — The total of all prior depreciation, including any Section 179 deduction claimed on the asset.
• Accumulated Depreciation as of 1/1/90 — Prior depreciation taken as of the first tax year beginning in 1990. This figure exists specifically for recomputing the ACE depreciable basis for the current asset.
• Accumulated Depreciation — The running total of both prior-year and current-year depreciation for the asset.
• Accumulated Depreciation 4797 — The sum of prior and current depreciation for the active asset, including the Section 179 deduction. This applies to all return types except 1065 and 1120S.

Basis and Adjustment Fields

Several fields represent derived calculations rather than user-entered values:

• Adjusted Basis — The unrecovered basis, calculated as cost minus other deductions, minus investment tax credit, minus accumulated depreciation.
• Adjusted Basis 4797 — Mirrors the Accumulated Depreciation 4797 logic: the sum of prior and current depreciation including Section 179, for all return types except 1065 and 1120S.
• ACE Adjustment — The difference between ACE depreciation and Federal depreciation.
• AMT Adjustment — The difference between AMT depreciation and Federal depreciation.

Asset Identification and Description

These fields are user-editable and appear on the Asset Detail pane:

• Asset Description 1 and 2 — Two separate descriptive lines entered for each asset on the Asset Detail pane.
• Asset Number — The record number assigned to or manually entered for each asset, also on the Asset Detail pane.
• Asset Sold — A flag indicating whether the current asset has been disposed of.

Amortization and Classification

• Amortization Code — The specific Internal Revenue Code section, Treasury regulation, or state law that applies to the current asset. Users can change this in the Asset Detail pane.
• Amortization Description — A plain-text description of the applicable IRC section, regulation, or state law. Also editable in the Asset Detail pane.
• Class Life — The property class assigned under MACRS rules, which generally determines the asset’s recovery period.

Business Use and Percentages

• Business Percentage — The percentage of each asset’s use attributable to business activity, as designated in the Basis Detail pane.
• Applicable Percentage — Defaults to 100% except for certain low-income rental housing described in Section 1250(a)(1)(B). In those cases, the percentage is 100% minus one percentage point for each full month beyond 100 full months that the property was held. This can be modified on the Disposal tab.

Category and Client-Level Fields

• Category Description — Descriptive text used to identify each category. This can be modified on the Groupings tab within the Client Information window.
• Category ID — A unique numeric identifier for each category.
• Client Beginning of Year — The beginning-of-year date established on the Date tab of the Client Information window.
• Client End of Year — The current year-end date for the client, also modifiable via the Date tab.

The Practical Takeaway

The recurring confusion here is understandable. Fixed Asset Manager surfaces upward of two dozen distinct fields on a typical asset record, many with subtly different definitions — accumulated depreciation versus accumulated depreciation for Form 4797, adjusted basis versus adjusted basis for Form 4797, ACE adjustments versus AMT adjustments. Users who misread these fields risk pulling incorrect values onto tax returns or internal depreciation schedules.

The key distinction to keep in mind is which fields are system-calculated (Adjusted Basis, ACE Adjustment, AMT Adjustment) versus which are user-controlled (Asset Description, Amortization Code, Business Percentage). Editing a calculated field directly is generally not possible; the value updates only when the underlying inputs change. For users dealing with damaged or corrupted company files where Fixed Asset Manager data has become unreadable, the field definitions above also serve as a reference point for verifying that reconstructed values are landing in the correct columns.