For many small US businesses, Xero fixed assets and lease accounting built into the platform covers everything they need. But for clients with IRS tax depreciation requirements, IFRS reporting obligations, lease accounting under ASC 842 or IFRS 16, or asset registers above 500 assets, Xero’s built-in module has material gaps — and those gaps have real consequences at period end.
This guide is for Xero partners and advisors in the United States. It documents where Xero works well, where it runs out of capability, and what AssetAccountant provides for clients that need more. Across 30 assessed capability areas, AssetAccountant leads on 70% — this article explains what that means in practice.
When Xero Fixed Assets Works Well
Xero’s fixed asset module is a solid fit for clients that:
- Report under US GAAP and handle IRS tax depreciation externally
- Have fewer than approximately 500 assets in their register
- Have no IFRS obligations — not a subsidiary of a foreign IFRS-reporting group
- Have no ASC 842 or IFRS 16 lease accounting requirements
- Have straightforward depreciation needs with no partial disposal complexity
For these clients, Xero’s native integration, automatic GL posting, and connection to its reporting suite make it a convenient and sufficient choice.
Where Xero Starts to Break Down
IRS Tax Depreciation
This is the most significant gap for US clients. In the United States, accounting depreciation and IRS tax depreciation are separate calculations. Most US businesses use MACRS for tax purposes alongside GAAP straight-line or another method for their accounts.
Xero’s fixed asset module calculates accounting depreciation only. There is no MACRS tax book, no Section 179 calculation, and no bonus depreciation tracking within the product. Xero publishes informational guides on Section 179 and MACRS on its website — but these are educational resources, not product features. The actual IRS tax calculations must be handled outside Xero.
For clients where the accountant manages IRS depreciation separately, this may be acceptable. For clients that want accounting and tax depreciation tracked in the same register, Xero cannot provide that.
IFRS Reporting
Most US private companies report under US GAAP, which requires the cost model — revaluations are not permitted, so Xero’s single accounting book is not a gap for them. But US subsidiaries of foreign IFRS-reporting groups, and US entities that have voluntarily adopted IFRS, require revaluation and impairment support. Xero has no impairment write-down functionality in its fixed asset module and cannot serve as the fixed asset solution for these entities.
Lease Accounting (ASC 842 / IFRS 16)
Xero has no native lease accounting module. US clients with obligations to recognise right-of-use assets and lease liabilities under ASC 842 or IFRS 16 must use a separate third-party application — meaning fixed assets and leases sit in different tools, with separate GL mappings and separate workflows.
Register Size
Xero’s fixed asset module has a soft cap of approximately 500 assets. For growing businesses or organisations managing larger registers, this becomes a practical constraint.
Key Capability Gaps: A Summary
| Capability | Xero Fixed Assets | AssetAccountant |
|---|---|---|
| IRS tax book (MACRS) | Not available | Full MACRS — all asset classes and conventions |
| Section 179 expensing | Not available in the module | Supported — $2,560,000 limit for tax years beginning 2026 |
| Bonus depreciation (100%) | Not available | Supported — 100% restored under OBBBA |
| Listed property / vehicle caps | Not available | Applied automatically |
| IFRS revaluations | Not available | Supported |
| Impairments (ASC 360) | Not supported | Supported — with full journal posting |
| Partial disposals | Not available | Supported |
| Multi-book (GAAP + IRS tax) | Not available | Supported |
| Components / sub-assets | Not supported | Supported |
| Lease accounting (IFRS 16) | No native module | Built into the same platform, separately priced |
| Asset finance / conditional sale | Not available natively | Supported natively |
| Asset register size | ~500 asset soft cap | Unlimited — up to 50,000 assets in current client registers |
| Portfolio forecasting | Not available | 100-year depreciation forecasting |
| Custom fields | Not available | Unlimited custom fields per asset |
| Multi-entity / consolidated reporting | Separate orgs, no consolidated register | Supported |
Where Xero leads: its native GL integration and reporting suite are genuine strengths. Fixed assets are part of Xero itself, with automatic journal posting and direct connection to the P&L and balance sheet.
IRS Tax Depreciation in More Detail
For US clients, the IRS tax book is the most common reason to look beyond Xero.
AssetAccountant maintains a full IRS tax depreciation book alongside the accounting book, updated annually. This covers:
- MACRS — General Depreciation System (GDS) and Alternative Depreciation System (ADS), with half-year, mid-quarter, and mid-month conventions across all asset classes
- Section 179 expensing — up to $2,560,000 for tax years beginning in 2026, with the applicable phase-out
- 100% bonus depreciation — restored for qualified property under the One Big Beautiful Budget Act (OBBBA), effective for property placed in service after 19 January 2025
- Listed property and luxury vehicle caps — applied automatically
The accounting book and IRS tax book run separately, with different cost bases where applicable. The register reflects both the GAAP position and the tax position without manual reconciliation.
Lease Accounting and Asset Finance
Xero has no native ASC 842 or IFRS 16 lease accounting module. For US clients with lease obligations under IFRS 16 — typically US subsidiaries of foreign IFRS groups — AssetAccountant includes lease accounting as a separately priced add-on within the same platform.
Right-of-use assets, lease liabilities, and current/non-current splits are handled in the same system as the fixed asset register, with shared GL mapping. Asset finance and conditional sale workflows are also supported natively. There is no separate lease or finance tool to maintain alongside Xero.
What the Difference Looks Like in Practice
For a US subsidiary of a foreign IFRS-reporting group, a typical Xero-only setup looks like this: accounting depreciation runs in Xero, IRS tax depreciation is tracked in a spreadsheet or separate tax tool, IFRS lease accounting sits in a third-party application, and the finance team reconciles across all three at period end.
AssetAccountant consolidates those workflows. The accounting book, IRS tax book, and lease accounting run in one platform, with a single Xero integration handling the GL postings.
For a straightforward US GAAP business with fewer than 500 assets and no IRS tracking requirements, that level of consolidation is not necessary — Xero’s built-in module is sufficient.
What You Get with AssetAccountant
AssetAccountant is a purpose-built fixed asset management and lease accounting platform. For US Xero clients, the core capabilities are:
- IRS tax book — MACRS, Section 179, bonus depreciation, and listed property rules, maintained and updated annually
- Multi-book support — separate US GAAP and IRS tax books with different cost bases, plus IFRS options for subsidiaries of foreign groups
- Impairment write-downs — supported with full journal posting, relevant for IFRS reporters
- Lease accounting and asset finance — IFRS 16 and conditional sale workflows in the same platform as fixed assets, separately priced
- Unlimited asset register — current clients include registers of up to 50,000 assets
- Partial disposals and components — including sub-asset tracking and units-of-use depreciation
- Portfolio-level forecasting — 100-year depreciation forecasting across the full register
- Custom fields and attachments — unlimited per asset
- Multi-entity support — with consolidated reporting across entities
- Xero integration — one-click journal posting, with draft assets generated automatically from Xero GL transactions
AssetAccountant is built to be used directly by finance teams and management accountants, without specialist implementation support.
How AssetAccountant Works with Xero
AssetAccountant integrates directly with Xero via a dedicated sync-based integration. Transactions from Xero GL accounts of Fixed Asset type automatically generate draft assets in AssetAccountant. Journals post back to Xero with one click.
The integration is additive — Xero continues to handle the GL, reporting, and accounting workflows it does well. AssetAccountant handles the fixed asset register, IRS tax book, and lease accounting that Xero’s built-in module does not cover.
When to Use Each
Xero’s built-in fixed asset module is likely sufficient if the client:
- Reports under US GAAP and IRS tax depreciation is handled externally
- Has fewer than approximately 500 assets
- Has no IFRS obligations
- Has no ASC 842 or IFRS 16 lease accounting requirements
- Has straightforward depreciation needs with no partial disposal requirements
AssetAccountant is the better fit if the client:
- Needs IRS tax depreciation — MACRS, Section 179, bonus depreciation — tracked within the asset register
- Reports under IFRS, as a US subsidiary of a foreign group or a voluntary IFRS adopter
- Has IFRS 16 lease accounting or asset finance obligations and wants these in the same platform as fixed assets
- Manages more than approximately 500 assets
- Needs partial disposals, components, units-of-use depreciation, or dual-book registers
- Wants portfolio-level depreciation forecasting
Conclusion
Xero’s fixed asset module is a capable tool for straightforward US GAAP accounting depreciation. It works well within its scope. The limitations become relevant when clients have IRS tax tracking requirements, IFRS obligations, lease accounting needs, or registers that exceed its practical size limit.
For those clients, AssetAccountant provides the capability Xero’s built-in module does not — while continuing to work alongside Xero for GL integration and reporting.
If you’re advising a US client whose fixed asset or lease accounting requirements go beyond what Xero covers, AssetAccountant is worth exploring.
