Anglo-American loan

The Anglo-American Loan Agreement was a post–World War II loan made to the United Kingdom by the United States on 15 July 1946, enabling its battered economy to keep afloat.  The loan was negotiated by British economist John Maynard Keynes and  American diplomat William L. Clayton.  Problems arose on the American side, with many in Congress reluctant, and with sharp differences between the treasury and state departments. The loan was for $3.75 billion (US$57 billion in 2015) at a low 2% interest rate; Canada loaned an additional US$1.19 billion. The British economy in 1947 was hurt by a provision that called for convertibility into dollars of the wartime sterling balances the British had Borrowed from India and others, but by 1948 Marshall Plan money was flowing that did not have to be repaid.  The entire loan was paid off in 2006, after it was extended six years.

Background

At the start of the war, Britain had spent the money that they did have in normal payments for materiel under the "US cash-and-carry" scheme. Basing rights were also traded for equipment, e.g., the Destroyers for Bases Agreement, but by 1941 Britain was no longer able to finance cash payments and Lend-Lease was introduced.  Lend Lease aid did not have to be paid back, but the other loans did.
Large quantities of goods were in Britain or in transit when Washington suddenly and unexpectedly terminated Lend-Lease on 21 August 1945. The British economy had been heavily geared towards war production (around 55% GDP) and had drastically reduced its exports. The UK therefore relied on Lend-Lease imports to obtain essential consumer commodities such as food while it could no longer afford to pay for these items using export profits. The end of lend-lease thus came as a great economic shock. Britain needed to retain some of this equipment in the immediate post war period. As a result, the Anglo-American loan came about. Lend-lease items retained were sold to Britain at the knockdown price of about 10 cents on the dollar giving an initial value of £1.075 billion.

Terms

John Maynard Keynes, then in poor health and shortly before his death, was sent by the United Kingdom to the United States and Canada to obtain more funds.  British politicians expected that in view of the United Kingdom's contribution to the war effort, especially for the lives lost before the United States entered the fight in 1941, America would offer favorable terms. Instead of a grant or a gift, however, Keynes was offered a loan on favorable terms.
Historian Alan Sked has commented that, "the U.S. didn't seem to realize that Britain was bankrupt", and that the loan was "denounced in the House of Lords, but in the end the country had no choice."  America offered $US 3.75bn (US$52 billion in 2019) and Canada contributed another US$1.19 bn (US$17 billion in 2019), both at the rate of 2% annual interest.  The total amount repaid, including interest, was $7.5bn (£3.8bn) to the US and US$2bn (£1bn) to Canada.
The loan was made subject to conditions, the most damaging of which was the convertibility of sterling. Though not the intention, the effect of convertibility was to worsen British post-war economic problems. International sterling balances became convertible one year after the loan was ratified, on 15 July 1947. Within a month, nations with sterling balances (e.g. pounds which they had earned from buying British exports, and which they were now permitted to sell to Britain in exchange for dollars) had drawn almost a billion dollars from British dollar reserves, forcing the British government to suspend convertibility and to begin immediate drastic cuts in domestic and overseas expenditure. The rapid loss of dollar reserves also highlighted the weakness of sterling, which was duly devalued in 1949 from $4.02 to $2.80.
In later years, the term of 2% interest was rather less than the prevailing market interest rates, resulting in it being described as a "very advantageous loan" by members of the British government, as elaborated below.

Loan spending

Much of the loan had been earmarked for foreign military spending to maintain the United Kingdom's empire and payments to British allies prior to its passage, which had been concealed in negotiations through to the summer of 1946.  Keynes had noted that a failure to pass the loan agreement would cause Britain to abandon its military outposts in the Middle Eastern, Asian and Mediterranean regions, as the alternative of reducing British standards of living was politically unfeasible.

Repayment

The last payment was made on 29 December 2006 for the sum of about $83m (£45.5m), the 29th being the last working day of the year.  The final payment was actually six years late, the British Government having suspended payments due in the years 1956, 1957, 1964, 1965, 1968 and 1976 because the exchange rates were seen as impractical.  After this final payment Britain's Economic Secretary to the Treasury, Ed Balls, formally thanked the US for its wartime support.

In television

Sir Christopher Meyer presented a history of the loan and its effects in the BBC series Mortgaged to the Yanks.