Global Debt Service Coverage Ratio Calculator

A global debt service coverage ratio (global DSCR) calculator compares cash available to pay debt across a borrower’s business and personal finances with the scheduled debt payments across those same sources. Enter annual cash flow and annual debt service for the business and the owner or guarantor; the result is a ratio showing how many dollars of counted cash flow are available for each dollar of counted debt service.

Formula

The global DSCR is the sum of cash flow available for debt service, divided by the sum of debt service included in the analysis:

Global DSCR = (business cash flow + owner or guarantor cash flow) ÷ (business debt service + owner or guarantor debt service)

• Business cash flow is the annual amount the analysis counts as available to service business debt, in dollars per year.
• Owner or guarantor cash flow is annual personal cash flow included in the analysis, in dollars per year.
• Business annual debt service is the annual principal and interest payments, or other scheduled payments defined by the analysis, on included business obligations.
• Owner or guarantor annual debt service is the corresponding annual payments on included personal obligations.

The second output, cash flow after counted debt service, is the numerator minus the denominator. The calculator takes annual amounts in dollars and returns a dimensionless coverage multiple plus a dollar surplus or shortfall. The debt-service inputs must be greater than zero because the ratio is undefined if total counted debt service is zero.

Worked Example

Using the defaults shown above, business cash flow is $150,000 and owner or guarantor cash flow is $50,000. Their combined cash flow is:

$150,000 + $50,000 = $200,000

Business annual debt service is $100,000 and personal annual debt service is $30,000. Combined debt service is:

$100,000 + $30,000 = $130,000

Divide combined cash flow by combined debt service:

$200,000 ÷ $130,000 = 1.53846…, or 1.54x rounded to two decimal places.

The cash flow remaining after these payments is $200,000 − $130,000 = $70,000.00. These figures are illustrative inputs, not a benchmark or a prediction of a lender’s decision.

What Global DSCR Measures

A DSCR expresses the relationship between cash flow and required debt payments over a defined period. A business-only DSCR includes business cash flow and business debt service. A global DSCR broadens the calculation by combining business figures with selected personal or guarantor figures, often to assess the overall resources and obligations presented in a loan analysis.

“Global” does not mean every asset, income source, or liability everywhere is automatically counted. The person or institution preparing the analysis determines which cash-flow and debt-service items qualify, the time period, and how amounts are adjusted. The same borrower can therefore have different reported ratios under different documented methods.

How to Enter and Read the Result

Use matching periods and consistent definitions. If the analysis is annual, convert monthly payments to annual totals and use cash flow for the same year. Do not mix a monthly income figure with annual debt payments. Enter cash flow after the operating costs and adjustments the relevant analysis requires, rather than assuming that revenue equals cash available for debt service.

• Above 1.00x: the entered combined cash flow exceeds entered combined debt service. A 1.25x ratio means $1.25 of counted cash flow for every $1 of counted payments.
• At 1.00x: the entered cash flow equals debt service, leaving no arithmetic surplus in this simplified calculation.
• Below 1.00x: the entered cash flow is less than debt service, creating a shortfall under the inputs and definitions used.

These are descriptions of the arithmetic, not universal approval thresholds. A lender or other analyst may apply additional measures, adjustments, and requirements. A positive surplus also does not necessarily mean all household or business expenses have been represented.

Common Calculation Problems and Limits

The most frequent errors are counting the same obligation twice, omitting a debt payment, or adding cash flow that is not actually available for debt service. Be clear about whether taxes, owner draws, irregular income, lease payments, or proposed new loan payments are included. The calculation itself cannot determine the proper treatment; use the definitions supplied for the analysis and verify the underlying figures.

Another common misconception is that a global ratio is simply the business DSCR with personal income added. The denominator matters just as much: if personal cash flow is included, the matching personal debt obligations may also need to be included under the applicable method. Adding income while ignoring related obligations can overstate coverage.

This calculator is a simplified arithmetic tool. It does not assess the reliability of income, estimate future cash flow, adjust for seasonality, determine which expenses or liabilities qualify, or apply a lender’s underwriting policy. It also does not calculate a loan’s payment from its rate and term; enter the annual debt-service totals prepared for the analysis. Ratios can change materially when assumptions or included items change, so retain a clear record of the figures and period used.

Global DSCR Compared With Business DSCR

A business DSCR focuses on business cash flow and business debt service. A global DSCR combines the business amounts with additional personal or guarantor amounts that the analysis elects to count. For example, a business might have $150,000 of qualifying annual cash flow against $100,000 of business debt service, a business-only ratio of 1.50x. Adding $50,000 of personal cash flow and $30,000 of personal debt service produces the global ratio of 1.54x in the worked example.

The global result is not automatically higher: adding personal debt service without enough additional cash flow can reduce the ratio. Nor does a higher global DSCR by itself establish that a borrower qualifies for financing; the ratio is only one measure and its inputs and interpretation depend on the analysis.

Frequently Asked Questions

What does a global DSCR of 1.25 mean?
It means the combined cash flow entered is 1.25 times the combined debt service entered. In simple terms, that is $1.25 of counted cash flow for every $1 of counted payments over the stated period.

Is global DSCR the same as business DSCR?
No. Business DSCR uses business cash flow and business debt service. Global DSCR can include those figures plus selected personal or guarantor cash flow and debt obligations.

Should personal debt be included in global DSCR?
That depends on the definitions and scope of the analysis. Include personal obligations when the method requires them, and avoid counting an obligation twice. Confirm the required treatment with the party requesting the calculation.

Can global DSCR be below 1.0?
Yes. A result below 1.0 means the entered combined cash flow is less than the entered combined debt service for that period. It indicates an arithmetic shortfall, not by itself a final lending decision.

Does a high global DSCR guarantee loan approval?
No. The ratio is not a guarantee. Decisions may depend on other financial information, documentation, definitions, and criteria not represented in this calculator.

This result is an estimate from the figures and definitions entered; the lender’s disclosure gives the exact figures.

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in bcf | Business cash flow available for debt service | $ | 150000 | 0 | 1000000000
in bds | Business annual debt service | $ | 100000 | 0.01 | 1000000000
in ocf | Owner or guarantor cash flow available for debt service | $ | 50000 | 0 | 1000000000
in ods | Owner or guarantor annual debt service | $ | 30000 | 0.01 | 1000000000
out gdscr | Global debt service coverage ratio | x | (bcf + ocf) / (bds + ods) | 2
out surplus | Cash flow after counted debt service | $ | bcf + ocf - bds - ods | 2