{"id":12525,"date":"2025-07-02T20:15:39","date_gmt":"2025-07-02T20:15:39","guid":{"rendered":"https:\/\/davelevy.info\/wiki\/?p=12525"},"modified":"2026-02-10T17:34:41","modified_gmt":"2026-02-10T17:34:41","slug":"on-the-national-debt","status":"publish","type":"post","link":"https:\/\/davelevy.info\/wiki\/on-the-national-debt\/","title":{"rendered":"On the National Debt"},"content":{"rendered":"\n<p>I wanted to write something on the National Debt as a constraint on fiscal policy, here are my confusing notes; which I added to in the winter of 2025.<\/p>\n\n\n\n<!--more-->\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h3 class=\"wp-block-heading\">Links &amp; News<\/h3>\n\n\n\n<p><a href=\"https:\/\/www.ft.com\/content\/6ab1637e-9919-416a-bc69-353d05529612\">UK signals expansion of short-term debt market in \u2018radical\u2019 borrowing shift<\/a> at the FT (usual constraints); Liz Webster <a href=\"https:\/\/x.com\/LizWebsterSBF\/status\/1994331621378429163\">claims its going to make things worse<\/a>, I am not so sure. One needs to understand the flexibility of the coupon yield. <em>28\/11\/2025<\/em><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.imf.org\/external\/datamapper\/CG_DEBT_GDP@GDD\/CHN\/FRA\/DEU\/ITA\/JPN\/GBR\/USA\">National Debt by country by the IMF<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/www.bankofengland.co.uk\/boeapps\/database\/index.asp?first=yes&amp;SectionRequired=D&amp;HideNums=-1&amp;ExtraInfo=false&amp;Travel=NIxSTx\">Public sector debt and money markets operations etc (including reserves) <\/a> by the BoE, I say, &#8220;Why is the BoE data so impenetrable?&#8221;<\/li>\n\n\n\n<li><a href=\"https:\/\/www.investopedia.com\/terms\/f\/foreign-debt.asp\">Foreign Debt: Definition and Economic Impact<\/a> from Investopedia &#8211; Excessive levels of foreign debt can <strong>hamper countries&#8217; ability to invest in their economic future<\/strong>\u2014whether it be via infrastructure, education, or health care\u2014as their limited revenue goes to servicing their loans. This thwarts long-term economic growth.<\/li>\n\n\n\n<li><a href=\"https:\/\/obr.uk\/box\/potential-vulnerabilities-from-a-rising-stock-of-foreign-held-debt\/\">Potential vulnerabilities from a rising stock of foreign-held debt<\/a>, by the OBR<\/li>\n\n\n\n<li><a href=\"https:\/\/www.economicshelp.org\/blog\/2215\/readers-questions\/uk-debt-held-by-oversees-investors\/\">UK debt held by foreign investors<\/a>, a series of charts, from 2003, to 2023, focusing on the proportion, which has been increasing but because domestic saving has collapsed. From the OBR July 2023<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"487\" src=\"https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-1024x487.png\" alt=\"a chart showing the growth of foreign held debt\" class=\"wp-image-13689\" srcset=\"https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-1024x487.png 1024w, https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-300x143.png 300w, https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-768x366.png 768w, https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image.png 1294w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Gemini says<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/gemini.google.com\/app\/fba3683f7490c7d1\">What are the negative effects of foreign owned debt ?<\/a><\/li>\n\n\n\n<li><a href=\"https:\/\/gemini.google.com\/app\/a4915a3cef5cf3e6\">Show me the list of countries world wide ordered by foreign held public debt as a proportion of total debt?<\/a> Can&#8217;t do that<\/li>\n\n\n\n<li><a href=\"https:\/\/gemini.google.com\/app\/c_91f21ccc5176b1af\">On foreign held debt<\/a>, from OBR 2025<\/li>\n\n\n\n<li><a href=\"https:\/\/gemini.google.com\/app\/9679972ac86a8ddc\">On CDS Prices<\/a>, by google gemini<\/li>\n\n\n\n<li><a href=\"https:\/\/gemini.google.com\/app\/fcf5ed266a4f9d3a\">On quantitive tightening, and bond longevity<\/a>, by google gemini<\/li>\n\n\n\n<li><a href=\"https:\/\/share.google\/aimode\/XWuRNlS7riGTTrr2n\">On interest payments on BoE owned bonds<\/a> by google gemini<\/li>\n<\/ol>\n\n\n\n<p>When I discovered how healthy the CDS prices were by international comparison, I had a little dig and made this chart, <\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><a href=\"https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"971\" height=\"520\" src=\"https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-1.png\" alt=\"\" class=\"wp-image-13691\" srcset=\"https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-1.png 971w, https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-1-300x161.png 300w, https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/image-1-768x411.png 768w\" sizes=\"auto, (max-width: 971px) 100vw, 971px\" \/><\/a><\/figure>\n\n\n\n<p>From google gemini, <a href=\"https:\/\/gemini.google.com\/app\/9679972ac86a8ddc\">https:\/\/gemini.google.com\/app\/9679972ac86a8ddc<\/a> , they say, a table showing the approximate <strong>5-year Sovereign CDS spreads<\/strong> (in basis points, where 100 bps = 1%) at the end of each year.<\/p>\n\n\n\n<p>See also <a href=\"https:\/\/www.worldgovernmentbonds.com\/cds-historical-data\/united-kingdom\/5-years\/\">https:\/\/www.worldgovernmentbonds.com\/cds-historical-data\/united-kingdom\/5-years\/<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\">After the &#8217;25 Autumn statement<\/h3>\n\n\n\n<p>I decided to get to grips with the problem of high-yield bond prices, and found the following<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/www.bankofengland.co.uk\/speech\/2025\/june\/catherine-l-mann-fireside-chat-at-the-federal-reserve-board-of-governors\">Quantitative tightening and monetary policy stance \u2212 speech by Catherine L. Mann<\/a>, prepared for the IF 75th anniversary conference in Washington DC. The Bank <a href=\"https:\/\/www.bankofengland.co.uk\/about\/people\/catherine-mann\/biography\">presents Ms Mann&#8217;s biography<\/a> on their web site. <\/li>\n\n\n\n<li><a href=\"https:\/\/www.theguardian.com\/politics\/2025\/sep\/18\/what-is-quantitative-tightening-how-affected-uk-finances\">What is quantitative tightening and how has it affected UK finances?<\/a> from the Guardian, explains that QE&#8217;s objective was to bring down yields by creating a demand for bonds. I thought it was to ease loans by swapping bank assets for cash. <\/li>\n\n\n\n<li><a href=\"https:\/\/www.gov.uk\/government\/publications\/debt-management-report-2025-26\/debt-management-report-2025-26-accessible\">Debt Management Report 2025-26 <\/a> by the Treasury, they say, &#8220;The UK\u2019s stock of index-linked debt stood at around \u00a3619 billion at the end of 2024, making up 24.5% of the government\u2019s wholesale debt portfolio&#8221;<\/li>\n\n\n\n<li>Index linked bonds depend on the RPI, <a title=\"RPI:Weights (parts per 1000) - Mortgage interest payments by the ONS\" href=\"https:\/\/www.ons.gov.uk\/economy\/inflationandpriceindices\/timeseries\/czxe\/mm23\">which includes mortgage costs<\/a> which depend upon market interest rates. This is potentially a vicious circle and certainly weakens the use of high interest rates as an anti-inflation measure. ChatGPT <a href=\"https:\/\/chatgpt.com\/c\/692df05a-a3cc-8332-9134-937623a1f0b3\">comments <\/a>on the role of interest itself in the RPI.<\/li>\n\n\n\n<li><a href=\"https:\/\/obr.uk\/box\/potential-vulnerabilities-from-a-rising-stock-of-foreign-held-debt\/\">Potential vulnerabilities from a rising stock of foreign held debt<\/a> from the OBR<\/li>\n\n\n\n<li><a href=\"https:\/\/www.ons.gov.uk\/economy\/grossdomesticproductgdp\/timeseries\/dgd8\/ukea\">Household savings rates over time<\/a>, from ONS<\/li>\n\n\n\n<li>What is the market interest rate, see the <a href=\"https:\/\/www.bankofengland.co.uk\/markets\/sonia-benchmark\">Sonia benchmark<\/a> from the Bank of England<\/li>\n\n\n\n<li>How likely is HMG to default? See the <a href=\"https:\/\/www.worldgovernmentbonds.com\/cds-historical-data\/united-kingdom\/5-years\/\">CDS price historical data for the UK 5-year bond<\/a> from world government bonds, and how to <a href=\"https:\/\/gemini.google.com\/app\/553bab29d5f0c03e\">convert it to a risk ratio<\/a>, the market has the risk ratio of UK default at 0.3% for one year and 1.3% over five years, so not very likely.<\/li>\n\n\n\n<li>The FT reports <a href=\"https:\/\/www.ft.com\/content\/4132b041-94de-4850-8151-532f4e8a7ef4\">on the recent Capital Adequacy tests<\/a>.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">More &#8230;<\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li><a href=\"https:\/\/stumblingandmumbling.typepad.com\/\">Some leftist economic policies<\/a> on macro, but references a debt ceiling via <a href=\"https:\/\/subscribe.bylinetimes.com\/edition\/75\/political-economy-between-a-rock-and-a-hard-place\/\">Rachel Reeves: Between a Rock and a Hard Place<\/a>, by Simon Nixon at Bylines Times. <\/li>\n\n\n\n<li><a href=\"https:\/\/www.worldbank.org\/en\/programs\/debt-statistics\/ids\">https:\/\/www.worldbank.org\/en\/programs\/debt-statistics\/ids<\/a> from the World Bank<\/li>\n\n\n\n<li><a href=\"https:\/\/www.imf.org\/external\/datamapper\/GG_DEBT_GDP@GDD\/ITA\/JPN\/GBR\/USA\">General Government Debt by the IMF<\/a> the IMF page, with UK\/US\/Italy\/Japan charted PSBR\/GDP. <\/li>\n\n\n\n<li><a href=\"https:\/\/commonslibrary.parliament.uk\/research-briefings\/sn02812\/\">Public finances: Economic indicators<\/a> HoC LIbrary, 20 June 2025<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"<p>I wanted to write something on the National Debt as a constraint on fiscal policy, here are my confusing notes; which I added to in the winter of 2025.<\/p>\n","protected":false},"author":1,"featured_media":12526,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","_share_on_mastodon":"0"},"categories":[137],"tags":[138,1334,2177,2176,1336],"class_list":["post-12525","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-economics","tag-economics-2","tag-macroeconomics","tag-national-debt","tag-psbr","tag-public-debt"],"share_on_mastodon":{"url":"https:\/\/mastodon.social\/@davelevy_eu\/114785474403283286","error":""},"jetpack_featured_media_url":"https:\/\/davelevy.info\/wiki\/wp-content\/uploads\/2025\/07\/gold-zlatakycz-unsplash-w1080.jpg","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/posts\/12525","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/comments?post=12525"}],"version-history":[{"count":22,"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/posts\/12525\/revisions"}],"predecessor-version":[{"id":13888,"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/posts\/12525\/revisions\/13888"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/media\/12526"}],"wp:attachment":[{"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/media?parent=12525"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/categories?post=12525"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/davelevy.info\/wiki\/wp-json\/wp\/v2\/tags?post=12525"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}