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Debt Service Coverage Ratio Calculator

Last updated: April 2026

Business Financials

£
£

Exclude depreciation, interest, and tax.

£

Add back depreciation as it is a non-cash expense.

£

Total annual loan repayments on existing debt - principal and interest.

£

Proposed Loan

£
%
months

Current DSCR

EBITDA£110,000
Existing debt service£0
Current DSCRNo existing debt

Proposed Loan

Proposed loan£100,000
Annual repayment£24,331.67
Total debt service£24,331.67
DSCR after loan4.52x

strong

DSCR Gauge

4.52x
<1.0 danger1.0 marginal1.25 minimum1.5+ good

Maximum affordable loan

Based on your financials and a minimum DSCR of 1.25, the maximum additional loan your business could comfortably service is approximately:

£361,669

Lender note

Most UK SME lenders require a minimum DSCR of 1.25 after the proposed loan. Some alternative lenders accept 1.1. Your DSCR is one of the first metrics a lender will calculate.

What is DSCR?

The Debt Service Coverage Ratio measures whether your business generates enough operating income to cover its debt repayments. A DSCR of 1.25 means you generate £1.25 of operating income for every £1.00 of debt service. Below 1.0 means your business cannot cover its debt from operations, and most lenders will not approve a loan in this situation.

What DSCR do lenders require?

Most UK high street banks and institutional lenders require a minimum DSCR of 1.25 after the proposed loan. Some alternative lenders will accept 1.1 for short-term facilities. Government backed schemes such as the Recovery Loan Scheme may have more flexible criteria. A DSCR above 1.5 is considered strong and will typically unlock better rates.

How can I improve my DSCR?

You can improve your DSCR by increasing revenue or gross margin, reducing operating expenses, paying down existing debt before taking new borrowing, or extending the term of proposed debt to reduce annual repayments. A longer loan term reduces annual debt service but increases total interest paid.

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