After 1990, maintenance budgets collapsed with the federation. Renovation today is decentralized: each successor state funds monuments through culture ministries, veterans' affairs departments, municipalities, and occasional EU or bilateral grants. Nothing aggregates spending under a single "spomenik renovation" line item.
Croatia offers the clearest parliamentary figure: in a 2019 answer to MP Domagoj Hajduković, the government reported that the Ministry of Culture had spent more than 10 million kuna over 12 years on WWII memorial heritage — documentation, conservation, reconstruction, and maintenance. That covers sites including Petrova Gora, Dudik (Vukovar), Jasenovac, and Batina, but excludes most local restoration (~300 smaller monuments reportedly repaired by municipalities, never centrally totaled).
Serbia runs an annual competitive grant through the Ministry of Labour for "investiciono održavanje ratnih memorijala," typically allocating 30–45 million dinars (~€250–380k) per year across all liberation-war memorials — WWI graves, new nationalist monuments, and Yugoslav-era works alike. No cumulative total is published.
In Bosnia and Herzegovina, funding is fragmented across entities. The Federation pledged 200,000 KM for Mostar's Partisan Cemetery after 2022 vandalism, but Balkan Insight reported little had been spent by 2023. Banja Luka's Banj Brdo monument has a 1.37M KM restoration estimate with no secured budget. Makljen was designated a national monument in 2010; restoration remains unfunded.
The gap between documented spending and documented need is stark. If you sum identifiable public renovation spend across successor states over two or three decades, you likely reach only the low tens of millions of euros — perhaps €10–25M as a fuzzy ceiling. Against an estimated 20,000–40,000 memorial sites, ~3,000 destroyed in Croatia alone in the 1990s, and flagship complexes needing €1M–€150M each, renovation funding is orders of magnitude below need. Most spending is ad hoc, politically selective, and poorly recorded.