High-Balance Conforming vs Jumbo Financing: Why Howard and Anne Arundel Differ From Montgomery

Updated October 2026

An $900,000 mortgage can be high-balance conforming in Montgomery County but jumbo in Howard or Anne Arundel County. The difference comes from the property's county, not its proximity to Washington or the borrower's income. For Maryland buyers comparing neighborhoods, that boundary can change pricing, documentation, reserves, and the useful size of a down payment.

Map the loan amount to the property's county

For one-unit properties in 2026, the baseline conforming limit is $832,750. Montgomery, Frederick, Prince George's, Calvert, and Charles counties have a $1,249,125 high-cost limit. Howard and Anne Arundel remain at the baseline, as do Baltimore-area counties and counties across the Eastern Shore and Western Maryland.

Use FHFA Loan Limits to confirm the county and unit count. An Annapolis mailing address does not create a separate high-cost designation.

High-balance conforming is still conforming financing. It exceeds the national baseline but remains within the applicable local agency limit. Jumbo financing exceeds that local limit and follows the selected investor's requirements.

Calculate the down-payment boundary

Consider a $1,050,000 one-unit purchase. In Howard or Anne Arundel, reducing the loan to $832,750 requires $217,250 down, approximately 20.69% of the price. A 20% down payment leaves an $840,000 mortgage, which is $7,250 above the baseline.

In Montgomery, that same $840,000 loan falls within the county's conforming range. This does not automatically make its interest rate lower: high-balance pricing adjustments and competitive jumbo programs can reverse the expected ranking.

Compare today's rates with matching credit, occupancy, points, and lock assumptions. Keep closing costs and post-closing reserves separate from the down payment.

Compare liquidity as carefully as the rate

Jumbo lenders may impose different reserve, credit, appraisal, and debt-to-income requirements. Agency eligibility also depends on the complete application, not simply staying under a dollar limit.

The Consumer Financial Protection Bureau provides tools for comparing Loan Estimates. Ask Skipjack & Stairs for both structures when you are near the boundary: one preserving cash and another bringing the balance within conforming limits.

Use the amortization schedule to compare principal reduction over your expected ownership period. For buyers considering an adjustable rate, the ARM versus fixed calculator adds another dimension without assuming a future refinance will be available.