The total amount of money the British government owes to the private sector and other purchasers of UK gilts (e.g. Bank of England)
How can National Debt be measured?
1. Debt-to-GDPratio
2. Publiclyheld debt
Debt-to-GDP ratio
The percentage of GDP that is composed of the UK'Snationaldebt
Provides a relativemeasure to assess the country'scapacity to supportborrowing
A higherratio indicates a heavierdebtburden
Facilitates internationalcomparisons
Reveals whether the debtburden is increasing or decreasingrelative to economicoutput
Publicly held debt
Debt held by external investors; includes individuals, institutions, and foreign governments
Excludesdebt held by government agencies or intragovernmental entities
Represents the portion of debt that is activelytraded in financial markets
Reflects the government'sreliance on external financing
Relevant for creditworthiness and can influenceinterest rates and investor confidence
Provides insight into howwillinginternational lenders are to supportgovernmentspending
Cyclical deficit
Occurswhengovernmentspending and taxation revenues fluctuate thought the tradecycle
Structural deficit
Fiscal deficit that occurs when the cyclicaldeficit is lowest
Actual deficit
Cyclicaldeficit + structuraldeficit
Structural surplus/balance
Occurs when at the peak of a boom, the actualfiscalbalance is in a surplus
If a government has a structuraldeficit, the nationaldebt is likely to growovertime
Economists argue that structural deficits need to be eliminated through raisingtaxes, cutting government spending or some combination
It is impossible to accurately measure the cyclical or structural deficit of an economy because trade cycles are not regular and the output gap is difficult to measure
Capital expenditure
Spending on long-term projects or buying of long-termassets that have long-termawards such as the HS2 railway, schools, hospitals, defence, infrastructure
Capital expenditure
Increased spending on schools and universities to increase human capital
Green projects such as solarpanels and wind turbines to preventincreasingpollution
Current expenditure
Day-to-daygovernment spending that keeps the economy rolling such as wages for hospitalstaff, drugs and medications, teachersalaries, studentloans
Current budget deficit
When governmentrevenues are less than currentexpenditure
Current budget surplus
When currentexpenditure is less than government revenue
Primary budget deficit

The actualdeficit but does not include interest payments on the nationaldebt
If a government is in financial difficulties, it needs to run a primary surplus at least equal to debt interest payments to avoid increasing the national debt
Factors that influence the size of fiscal deficits and surpluses
Structuraldeficits and surpluses
Cyclicaldeficits and surpluses
Unforeseenevents
Debtinterest
Structural deficits and surpluses
Caused by the planned spending and tax decisions of the government
Cyclical deficits and surpluses
Caused by changes in government spending and tax revenues which change as GDP changes
Unforeseen events
The financial crisis of 2007-08
Debt interest
Depends on the total amount owed and the rate of interest
The rate of interestdepends on the market rate and the government'scredit rating
It is possible for a government to increase its borrowing substantially but the total amount of interestpaid on its National Debt to fall if it is able to refinance part of its debt at muchlower rates of interest
The size of fiscal deficits/surpluses
Impactsinterest rates, debt servicing, inter-generational equity, the rate of inflation, the country's credit rating, and FDI
Impact on interest rates
A rise in governmentborrowing should lead to a rise in market interest rates, but this maynot happen for various reasons
Impact on debt servicing
A rise in borrowing leads to a rise the amount of interest paid, but the impact depends on the interest rate on current borrowing
Impact on inter-generational equity
National Debt is not prioritised for repayment because the cost of financing thedebtis moreimportant, and the realvalue of the debtdeclinesovertime due to inflation
Impact on the rate of inflation
Governmentborrowing to finance a deficit may have noimpact on AD, but printing more money will shiftAD and lead to demand-pullinflation
Impact on the country's credit rating
The credit rating influences the interest rate that has to be paid, with more debt leading to more risk
Impact on FDI
Countries with severe fiscal problems are likely to see FDIdecrease due to the recession and government actions to deal with fiscal issues