Excluding below-the-line items: Subtotal Ignore vs Other-Exclude

Subtotal Ignore

What it does: Drops the line item completely. It won't appear anywhere in your mapped financials.

Does the system learn from it? No. This is the one mapping action Archer deliberately does not learn from. The reasoning: you might ignore "vendor rebates" on this deal but want to capture it on the next one. If the system learned to always ignore it, you'd have to manually un-ignore it later.

When to use it: True subtotal rows (like "Total Repairs and Maintenance" when you're already mapping the individual line items), one-time items you may or may not want to exclude on future deals, or items that are genuinely just noise in this particular T12.

Other-Exclude (or a custom exclude category)

What it does: Maps the line item to a below-the-line category. It still appears in your financials — you can see what was excluded — but it's separated from operating expenses and doesn't affect your NOI calculation.

Does the system learn from it? Yes. Next time Archer sees that line item, it maps it to your exclude category automatically.

When to use it: Items you consistently want below the line: interest income, debt service, capital expenditures, non-recurring items. The advantage over Subtotal Ignore is visibility — you can always see what was excluded and verify it was the right call.

Recommendation

Use Other-Exclude as your default for below-the-line items. Use Subtotal Ignore only for actual subtotal rows or items where you genuinely don't want the system to develop a pattern.